Donald Lococo Architects

Referred to as "America's attic," the National Museum of American History offers an unprecedented collection of items that numbers to nearly three million entries. Everything from Dorothy's ruby red slippers, to one of the first Kermit the Frog puppets, to Julia Child's kitchen, to an astounding 34-foot Star Spangled Banner, are just a few of the numerous highlights. The kids will love the interactive displays, especially the ones that encourage invention and creativity.

Touted as America's First Museum of American Art, the Phillips Collection is a museum that not only presents an impressive collection of exhibits that feature impressionist, post-impressionist and contemporary American art, it also boasts a rather intimate charm. That mood is perfect for a romantic afternoon date with that special someone. Stroll through the galleries and discuss your impressions of these works and see where the conversation (and the afternoon) goes from there.

One of the city's most stunning attractions is the Washington National Cathedral that began construction in 1907 and was not completed until 1990. Theodore Roosevelt was just one of the Presidents who oversaw the cathedral's construction, and every US President has attended services there. The structure is approximately one-tenth of a mile long and it contains more than 200 stained-glass windows that create a mesmerizing effect when the sun shines through. The observation gallery within the cathedral offers still more unbelievable vantage points, and there are regular tours that explain the architecture, history and the church's mission in further detail.