| A new language museum that once was Franklin School, designed by Adolf Cluss. |
| Red vertical steel supports made a dramatic exterior statement on the new International Spy Museum, which was designed by Rogers Stirk Harbour + Partners. |
| Designed in 1963 by Philip Johnson and Richard Foster, the Kreeger residence was built on five and a half wooded acres. The residence turned into a private museum. |
| The ceiling of the Post Office Museum. The architectural firm of D.H. Burnham & Co. designed this building in classic Beaux Arts style. |
| The glass pyramids of the East Building of National Gallery of Art designed by I.M.Pei. |
| A lockhouse near the C&O Canal. The C&O Canal Trust has renovated six of them for overnight stays. |
| The Arts and Industries Building is the Smithsonian’s second oldest building |
| Dupont Circle's rowhouses, primarily built before 1900, feature variations on the Queen Anne and Richardsonian Romanesque revival styles. |
Union Station is a soaring neoclassical masterpiece designed by famed architect and planner Daniel Burnham. |