Barnes & Noble

The Smithsonian National Museum of Natural History boasts the world's largest natural history collection that will inspire several "oohs' and "aahs" from visitors of all ages. Among the highly dramatic and memorable exhibits are a 70 million-year-old dinosaur egg, an incredible giant squid, and a look at a truly unforgettable tarantula feeding that will inspire several gasps among all who view it. In addition to all of these exhibits, the museum offers even more adventures via the 3-D IMAX theater within its facility.

Walking tours would be great if weren't for all that walking. Luckily, there's A Tour De Force: Guided Tours of Washington to the rescue! See some of the city's most popular sites like the White House, the US Capitol and the Lincoln and Vietnam Memorials, all from the comfort of a Segway cycle. You'll be supplied with a helmet and a Segway scooter as well as all the information you need to truly absorb and appreciate the incredible sites that make Washington such a vital place in so many ways. And, you'll see it all without tiring out your feet.

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.