Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

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

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

A small Richmond island dotted with the remnants of hundreds of years of history.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

The United States Capitol's former columns still stand.

Atop this media building, two hives containing more than 30,000 bees keep the surrounding area vibrant.

A secret greenspace hides atop a Capitol parking garage.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

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

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.