National Museum of Natural History of the Smithsonian Institution

Arctic Studies Center - Arctic Anthropology and Archeology, Native Culture, Arctic Wildlife, Arctic Collections, Virtual Museum, Educational Java Game.
The Department of Anthropology of the National Museum of Natural History - cares for nearly 3 million ethnological, archaeological, and physical anthropology specimens from all over the world; an extensive archival collection of manuscripts, photographs, ethnographic film; and a comprehensive library collection.
Department of Botany
Department of Paleobiology - Paleobiology is the study of fossils as once living organisms, rather than simply as prehistoric death assemblages. Paleobiology includes several branches, of which two major ones are paleozoology and paleobotany, the former being the study of fossil animals, and the latter the science of ancient plants.
Dinosaurs at the National Museum of Natural History - learn about a dinosaur bone injury, view some "mummified" dinosaur skin impressions, learn about herbivore vs. carnivore teeth, examine the brain cavity of a Triceratops and much more.
Global Volcanism Program - documenting volcanic eruptions. Includes volcanic activity reports. From the Smithsonian Institution.
Lichen Research - Lichens are the symbiotic association of a fungus and an alga. Most lichen-forming fungi are members of the ascomycetes, the fungal group that includes the destructive bread molds, the edible morels, and the commercially-important baking and brewing yeast. A few are members of the basidiomycetes, which also include the typical mushrooms.
National Museum of Natural History
Repatriation Office - established to inventory, evaluate, and (when appropriate) return Native American skeletal remains and funerary or sacred objects to native peoples.

National Museum of American History: Smithsonian Institute

Department of Applied Arts and Industrial Design - The Department of Applied Arts and Industrial Design is home to some 30,000 three-dimensional objects that date from antiquity to the present.
Library and Research Center - among the world's largest philatelic and postal history research facilities. With over 40,000 volumes and manuscripts, the museum's new Library Research Center is among the world's largest philatelic and postal history research facilities. The 6,000-square-foot library offers researchers the opportunity to browse through current philatelic and postal magazines and newsletters. Scholars have the opportunity to conduct research on many topics from the library's outstanding special collections.
National Design Museum - The only museum in the U.S. devoted exclusively to the study of historical and contemporary design, Cooper-Hewitt, National Design Museum recognizes that individuals, societies, and the natural environment are linked through design.
NGAkids - the National Gallery of Art introduces kids to the world of art. Provides information on techniques and periods of art.
National Museum of American History
National Museum of Women in the Arts - the only museum in the world dedicated exclusively to displaying works by women artists of all periods and nationalities.
National Numismatic Collection - one of the largest numismatic collections in the world. Located in the National Museum of American History, the NNC includes approximately one million objects--more than 400,000 coins and some 550,000 pieces of paper money. The NNC maintains an extensive exhibition hall on the third floor, although due to space restrictions, only about 6,000 items are on view at any time. The collection encompasses the entire history of money of the world; coins and paper money, as well as medals. It contains fascinating objects such as beads, wampum, dentalia, and other products once used as money.
The National Postal Museum - dedicated to the preservation, study & presentation of postal history & philately through stamps & objects.
National World War II Memorial - The World War II Memorial honors the 16 million who served in the armed forces of the U.S., the more than 400,000 who died, and all who supported the war effort from home. Symbolic of the defining event of the 20th Century, the memorial is a monument to the spirit, sacrifice, and commitment of the American people. The Second World War is the only 20th Century event commemorated on the National Mall’s central axis.
Smithsonian American Art Museum - The Smithsonian American Art Museum is dedicated to the preservation, exhibition, and study of visual arts in America. Our web site offers virtual exhibitions, children's activities, an online shop and tools for research and education.
The Smithsonian Chip Collection - The National Museum of American History's Chip Collection consists of individual donations of objects, images and documenation that traces the history of integrated circuits. The Chip Collection is a small part of the permanent collection of the Division of Information Technology & Society's Electricity Collections.
The National Gallery of Art - The National Gallery of Art, Washington houses one of the finest collections in the world illustrating major achievements in painting, sculpture, and graphic arts from the Middle Ages to the present.
United States Holocaust Memorial Museum - A living memorial to the Holocaust, the United States Holocaust Memorial Museum stimulates leaders and citizens to confront hatred, prevent genocide, promote human dignity, and strengthen democracy. A public-private partnership, federal support guarantees the Museum’s permanence, and donors nationwide make possible its educational activities and global outreach.
Vietnam Memorial - Deliberately setting aside the controversies of the war, the Vietnam Veterans Memorial honors the men and women who served when their Nation called upon them.