Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

These unusual rooms on wheels are holdovers from the 1960s.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

There’s a special club house at the top for the bell ringers.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

At 207 feet, one of the world's longest continuous escalators.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

It was once the base for a series of domestic terror attacks.

Look closely and you’ll notice that the color changes a third of the way up the tower.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The former home of the man whose radical ideas changed the nation.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

Home to items never before seen by the public.