
America's urban national parks: It's fitting that the birthplace of President Teddy Roosevelt (pictured), who founded the NPS, is itself a national park in New York City. Click through the gallery to find more national parks in cities:

Boston National Historic Park, Massachusetts: Eight sites, including Faneuil Hall, comprise this historic walking tour.

Gateway Arch National Park, St. Louis: The famous silver arch was the first major commission for Finnish architect Eero Saarinen.

The National Mall and Memorial Parks, Washington, DC: The tall white Washington Monument is the most eye-catching site in "America's front yard."

San Juan National Historic Site, Puerto Rico: The Spanish built this fortification, which was also a US military base during the World Wars.

Independence National Park, Philadelphia: The famous Liberty Bell, pictured here, is just one of the attractions in "America's most historic square mile."

World War II Valor in the Pacific National Monument, Honolulu, Hawaii: This site, which commemorates the Japanese attack on Pearl Harbor, is accessible only by boat.

Statue of Liberty National Monument, New York City: In addition to being a national park, Lady Liberty is a UNESCO World Heritage Site.

Alamo Mission, San Antonio: A major site of the Mexican-American War, it's also responsible for the phrase, "Remember the Alamo!"