This elaborate towering structure was once famed for its revolutionary height.

Huge masonic hall in Philadelphia with lavishly themed rooms.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

Live chainsaw carvings of tiki statues aim to keep a tradition with ancient roots alive in this small Delaware town.

A statue of the English poet for whom this Delaware town is named is ritually dressed in seasonally appropriate clothing.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

The historic home still shows the scars from a little run-in with the British in 1813.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

The rogue roots are gradually consuming some of the historic marble grave markers.

A gift from Scotland to the United States in memory of the 270 lives lost when Pan Am Flight 103 exploded over Lockerbie due to a terrorist bombing.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

Recorded as the first person buried in Arlington Cemetery.

Though his role as the inventor of baseball may be up for debate, fans still festoon Doubleday's grave with baseballs.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

Where the legendary Orson Welles got his theatrical start before "Citizen Kane."

There must be a pun in this haystack somewhere...

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The trials and tribulations of marking Poe's grave.