A historic arena where the Beatles played their first concert in the U.S.

Art deco landmark on the outskirts of Washington, D.C.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

The house where John Wilkes Booth conspired with his co-conspirators.

The oldest continuously operating fish market in the United States.

The national park was once a plantation estate.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

This historic national park is covered in the stunning ruins of red rock pueblos.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Stay in a room with a view... of the bottom of the ocean.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

When ecosystems collide in the arid Southwest.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

See massive fossils that are over 200 million years old in northeastern Arizona.