![Smithsonian National Museum of Natural History on National Mall. Washington, DC.](/t/USDCM/DCMN011.JPG) | ![Dome of National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN012.JPG) | ![Entrance of National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN019.JPG) | ![Neoclassical façade of National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN021.JPG) |
Smithsonian National Museum of Natural History (1910) on National Mall. Washington, DC. Style: Neoclassical. Architect: Hornblower & Marshall. | Dome of National Museum of Natural History. Washington, DC. | Entrance of National Museum of Natural History. Washington, DC. | Neoclassical façade of National Museum of Natural History. Washington, DC. |
![Entrance hall of National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN031.JPG) | ![Entrance hall of National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN033.JPG) | ![Model of whale at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN041.JPG) | ![Model of jelly fish at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN043.JPG) |
Entrance hall of National Museum of Natural History. Washington, DC. | Entrance hall of National Museum of Natural History. Washington, DC. | Model of whale at National Museum of Natural History. Washington, DC. | Model of jelly fish at National Museum of Natural History. Washington, DC. |
![Sea shell classification display at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN045.JPG) | ![Fossils of sea creatures at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN051.JPG) | ![Sea turtle fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN053.JPG) | ![Ichthyosaur at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN055.JPG) |
Sea shell classification display at National Museum of Natural History. Washington, DC. | Fossils of sea creatures at National Museum of Natural History. Washington, DC. | Sea turtle fossil (Protostega gigas) (Late Cretaceous 80-70 million years ago) at National Museum of Natural History. Washington, DC. | Ichthyosaur (Early Jurassic 195-180 million years ago) at National Museum of Natural History. Washington, DC. |
![Collection of coiled shell fossils at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN057.JPG) | ![<i>Sphenodiscus lenticularis</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN059.JPG) | ![Early whale at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN061.JPG) | ![Allosaurus skeleton in Smithsonian's Natural History Museum. Washington, DC.](/t/USDC/DCMG89.JPG) |
Collection of coiled shell fossils (mostly Late Cretaceous 80-65 million years ago) at National Museum of Natural History. Washington, DC. | Sphenodiscus lenticularis fossil (Late Cretaceous 68-65 million years ago) at National Museum of Natural History. Washington, DC. | Early whale (Zygorhiza kochii) (Late Eocene 39-37 million years ago) at National Museum of Natural History. Washington, DC. | Allosaurus dinosaur skeleton in Smithsonian's Natural History Museum. Washington, DC. |
![Skull of <i>Camarasaurus lentus</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN111.JPG) | ![Cast of <i>Stegosaurus stenops</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN121.JPG) | ![Array of dinosaur skeletons at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN122.JPG) | ![<i>Stegosaurus stenops</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN125.JPG) |
Skull of Camarasaurus lentus fossil (Late Jurassic 155-140 million years ago) at National Museum of Natural History. Washington, DC. | Cast of Stegosaurus stenops fossil (Late Jurassic 150 million years ago) at National Museum of Natural History. Washington, DC. | Array of dinosaur skeletons at National Museum of Natural History. Washington, DC. | Stegosaurus stenops fossil (Late Jurassic 150-140 million years ago) at National Museum of Natural History. Washington, DC. |
![<i>Allosaurus fragilis</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN131.JPG) | ![Skull of <i>Allosaurus fragilis</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN132.JPG) | ![<i>Ceratosaurus nasicornis</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN141.JPG) | ![<i>Camptosaurus dispar</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN151.JPG) |
Allosaurus fragilis fossil (Late Jurassic 150-140 million years ago) at National Museum of Natural History. Washington, DC. | Skull of Allosaurus fragilis fossil (Late Jurassic 150-140 million years ago) at National Museum of Natural History. Washington, DC. | Ceratosaurus nasicornis fossil (Late Jurassic 145 million years ago) at National Museum of Natural History. Washington, DC. | Camptosaurus dispar fossil (Late Jurassic 155-145 million years ago) at National Museum of Natural History. Washington, DC. |
![Skull of <i>Edmontosaurus annectens</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN161.JPG) | ![Skull of <i>Triceratops horridus</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN171.JPG) | ![Skull cast of a Pachycephalosaurus at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN181.JPG) | ![Cast of <i>Tyrannosaurus rex</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN191.JPG) |
Skull of Edmontosaurus annectens fossil (Late Cretaceous 80-65 million years ago) at National Museum of Natural History. Washington, DC. | Skull of Triceratops horridus fossil (Late Cretaceous 70-65 million years ago) at National Museum of Natural History. Washington, DC. | Skull cast of a Pachycephalosaurus (Late Cretaceous 70-65 million years ago) at National Museum of Natural History. Washington, DC. | Cast of Tyrannosaurus rex fossil (Late Cretaceous 65 million years ago) at National Museum of Natural History. Washington, DC. |
![Cast of <i>Tyrannosaurus rex</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN192.JPG) | ![Cast of <i>Tyrannosaurus rex</i> fossil at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN193.JPG) | ![Cast of <i>Tyrannosaurus rex</i> skull at National Museum of Natural History. Washington, DC.](/t/USDCM/DCMN195.JPG) |
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Cast of Tyrannosaurus rex fossil (Late Cretaceous 65 million years ago) at National Museum of Natural History. Washington, DC. | Cast of Tyrannosaurus rex fossil (Late Cretaceous 65 million years ago) at National Museum of Natural History. Washington, DC. | Cast of Tyrannosaurus rex skull (Late Cretaceous 70 million years ago) at National Museum of Natural History. Washington, DC. |
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