The Milkmaid (ca. 1660) by Johannes Vermeer. Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Art - Taste - Beauty, Leaves of Feminine Elegance, June 1932, No. 142, Grade 12 b y M. Renaud (1932). Original from The… Free Image from public domain license 
Cats by Thomas Hunter. Original from Library of Congress. Digitally enhanced by rawpixel. Free Image from public domain license 
Furisode with a Myriad of Flying Cranes (1910–1920) by anonymous. Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Birthday cards with decorative birds, flowers, and butterflies from The Miriam and Ira D. Wallach Division Of Art, Prints and… Free Image from public domain license 
Five Butterflies (1912) by Odilon Redon. Original from the National Gallery of Art. Digitally enhanced by rawpixel. Free Image from public domain license 
Magnolia Branch with Four Flowers (1910–1925) by anonymous. Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Moon and grasses (1909) by Unsodo. Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Roses from The Miriam and Ira D. Wallach Division Of Art, Prints and Photographs: Picture Collection published by L. Prang &… Free Image from public domain license 
Strawberries and plums (1828–1882) by Dirk Jan Hendrik Joosten. Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Sand dunes in Southern California. Original image from Carol M. Highsmith’s America, Library of Congress collection.… Free Photo from public domain license 
Eiffel Tower, Paris, X (1889–1910) by anonymous. Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Statue of Liberty (1883) by Pierre Petit. Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Still Life of Flowers (1600–1687) by Machtelt Moninckx. Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Splashing Figure (Study for “The Large Bathers”) (1884–1885) by Pierre-Auguste Renoir. Original from The… Free Image from public domain license 
Roses (1912) by Pierre-Auguste Renoir. Original from Barnes Foundation. Digitally enhanced by rawpixel. Free Image from public domain license 
Table Carpet with the Four Elements and a Strewn Floral Pattern (1650) by anonymous. Original from The Rijksmuseum. Digitally… Free Image from public domain license 
Campbell's magnolia (Magnolia Campbellii), Flowering plant from Illustrations of Himalayan plants (1855) by W. H. (Walter… Free Image from public domain license 
Fight between a Tiger and a Buffalo (1908) by Henri Rousseau. Original from The Cleveland Museum of Art. Digitally enhanced… Free Image from public domain license 
Field of forty-eight tiles with French lilies (1560–1600) by anonymous. Original from The Rijksmuseum. Digitally… Free Image from public domain license 
Decorative Depiction with Plants and Animals, (1760–1799) by anonymous. Original from The Rijksmuseum. Digitally… Free Image from public domain license 
Bowhead Whale Whale Original Antique Ocean Marine Mammal Handcolored Sealife Lithograph. Digitally enhanced from our own… Free Image from public domain license 
Clipper Ship Three Brothers, the largest sailing ship in the world published by Currier & Ives. Original from Library of… Free Image from public domain license 
Two apples on a branch (1834–1895) by Johannes Reekers (II). Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Tile panel of 96 tiles, decorated with geometric patterns (1840–1860) by anonymous. Original from The Rijksmuseum.… Free Image from public domain license 
Carpente (1944) by Reijer Stolk. Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
New Year's Greeting with Anemones (1897) by Sientje Mesdag-van Houten. Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Steam locomotives in the roundhouse of the Durango & Silverton Narrow Gauge Scenic Railroad in Durango, Colorado. Original… Free Photo from public domain license 
Hubble Goes High Def to Revisit the Iconic 'Pillars of Creation' Messier 16 (The Eagle Nebula). Original from NASA. Digitally… Free Photo from public domain license 
Couple of deers (1900 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Blooming lotus flowers (1920 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
The eastern hemisphere was captured on March 30, 2014, by the Visible Infrared Imaging Radiometer Suite on the Suomi NPP… Free Photo from public domain license 
A mixed herd of wild and domesticated horses frolics on the Ladder Livestock ranch, at the Wyoming-Colorado border. Original… Free Photo from public domain license 
Monarch Butterfly (Danais Archippus) from Moths and butterflies of the United States (1900) by Sherman F. Denton (1856-1937).… Free Image from public domain license 
Horses head for the corral in the daily roundup of horses, Riverside, Wyoming. Original image from Carol M. Highsmith’s… Free Photo from public domain license 
NASA's Solar Dynamics Observatory captured images of the sun emitting a mid-level solar flare. Original from NASA. Digitally… Free Photo from public domain license 
Approach of the simoom Desert of Gizeh illustration by David Roberts (1796–1864). Original from The New York Public… Free Image from public domain license 
Beautiful photomechanical print of Peony (1887–1897) by Ogawa Kazumasa. Original from The Rijksmuseum. Digitally… Free Image from public domain license 
Lobster by anonymous (1560–1585). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Around ex libris with an aesculaap between the pages of a book and the letters BL (1800–1950) by anonymous. Original… Free Image from public domain license 
Dusk view of the Dallas, Texas skyline. Original image from Carol M. Highsmith’s America, Library of Congress… Free Photo from public domain license 
Group of Egrets (1925 - 1936) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Water Lily (1920 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Lions in the grass at the Wild Animal Sanctuary near Keenesburg, Colorado. Original image from Carol M. Highsmith’s… Free Photo from public domain license 
A lush field beneath threatening skies in rural Otero County, Colorado. Original image from Carol M. Highsmith’s… Free Photo from public domain license 
Located in the southeast corner of California, the Imperial Sand Dunes are the largest mass of sand dunes in the state.… Free Photo from public domain license 
U.S. Capitol, Washington D.C. Photograph taken from the Thomas Jefferson Building. Original image from Carol M.… Free Photo from public domain license 
The ICESCAPE mission, or "Impacts of Climate on Ecosystems and Chemistry of the Arctic Pacific Environment," near Alaska.… Free Photo from public domain license 
Image of Asia and Australia at night. Original from NASA . Digitally enhanced by rawpixel. Free Photo from public domain license 
A dice floating in front of one of the windows in the Cupola of the Earth-orbiting International Space Station. Original from… Free Photo from public domain license 
Still Life with Violin by William Harnett (1848-1892). Original from Library of Congress. Digitally enhanced by rawpixel. Free Image from public domain license 
The Boquet by N. Currier. Original from Library of Congress. Digitally enhanced by rawpixel. Free Image from public domain license 
A traditional portrait of a flock of beautiful Japanese red crown crane by Ogata Korin (1658-1716). Digitally enhanced from… Free Image from public domain license 
Nasturtiums (1905) by Odilon Redon. Original from the Yale University Art Gallery. Digitally enhanced by rawpixel. Free Image from public domain license 
Bouquet of Flowers (1900—1905) by Odilon Redon. Original from The MET museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Evocation of Roussel (1912) by Odilon Redon. Original from the National Gallery of Art. Digitally enhanced by rawpixel. Free Image from public domain license 
Vintage Christmas Postcard from The Miriam and Ira D. Wallach Division of Art, Prints and Photographs. Original from The New… Free Image from public domain license 
We all wish you a merry Christmas (ca.1800–1900) from Rare Book Division. Original from The New York Public Library.… Free Image from public domain license 
Christmas in Austria (1910) by Bertha D. Hoxie and Frances Bartlett. Original from Library of Congress. Digitally enhanced by… Free Image from public domain license 
Boy beside Store Window Display of Christmas Ornaments. Original from Library of Congress. Digitally enhanced by rawpixel. Free Image from public domain license 
Veselé Vánoce! by Zdenek Guth. Original from The New York Public Library. Digitally enhanced by rawpixel. Free Image from public domain license 
Card Depicting Flowers in Blue Background (1865–1899) by L. Prang & Co. Original from The New York Public Library.… Free Image from public domain license 
Block printed table cover from the Industrial arts of the Nineteenth Century (1851-1853) by Sir Matthew Digby wyatt (1820… Free Image from public domain license 
Cock illustrated by Charles Dessalines D' Orbigny (1806-1876). Digitally enhanced from our own 1892 edition of Dictionnaire… Free Image from public domain license 
Umbrella Tree (Magnolia) from The natural history of Carolina, Florida, and the Bahama Islands (1754) by Mark Catesby (1683… Free Image from public domain license 
A matched trio of images of the central region of our Milky Way. Original from NASA. Digitally enhanced by rawpixel. Free Photo from public domain license 
NASA Blue Marble 2007 West captured by the Moderate Resolution Imaging Spectroradiometer on NASA’s Terra satellite in… Free Photo from public domain license 
Polar bear at the Arctic. Original from NASA. Digitally enhanced by rawpixel. Free Photo from public domain license 
Hundreds of thousands of stars crowded into the swirling core of our spiral Milky Way galaxy. Original from NASA. Digitally… Free Photo from public domain license 
The setting sun paints the clouds over NASA's Kennedy Space Center in Florida. Original from NASA. Digitally enhanced by… Free Photo from public domain license 
Russian support personnel arrive to help meet the Soyuz TMA-02M spacecraft shortly after the capsule landed. Original from… Free Photo from public domain license 
NASA/DLR Stratospheric Observatory for Infared Astronomy (SOFIA) 747SP cruises over central Texas on its first checkout… Free Photo from public domain license 
Jupiter Blues. Original from NASA. Digitally enhanced by rawpixel. Free Photo from public domain license 
This enhanced color view of Jupiter's south pole was created using data from the JunoCam instrument on NASA's Juno… Free Photo from public domain license 
This image of a sand dune field in a Southern highlands crater was acquired by NASA's Mars Reconnaissance Orbiter. Original… Free Photo from public domain license 
This image shows a layered deposit in Galle Crater, located in the Southern cratered highlands. Original from NASA. Digitally… Free Photo from public domain license 
Clear shot of every parcel of Earth’s land surface and islands in nighttime view in visible light. A composite of… Free Photo from public domain license 
Tropical cyclone. Original from NASA. Digitally enhanced by rawpixel. Free Photo from public domain license 
The NASA/ESA Hubble Space Telescope has spotted a UFO Galaxy, a NGC 2683, which is a spiral galaxy seen almost edge-on… Free Photo from public domain license 
St. Patrick's aurora, a green aurora taken at Donnelly Creek, Alaska, March 17th, 2015. Original from NASA. Digitally… Free Photo from public domain license 
Edwin Aldrin walking on the lunar surface. Neil Armstrong, who took the photograph, can be seen reflected in Aldrin’s… Free Photo from public domain license