The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

Ship skeletons haunt Baltimore's waterways.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

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

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

The site where Poe “in great distress, and ... in need of immediate assistance” likely died.

The trials and tribulations of marking Poe’s grave.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

The longest and tallest aqueduct in Britain can actually be sailed across.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

A subterranean playground in an abandoned slate mine.

A former major munitions plant that has been converted into a sprawling art space.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

The only place for a truly presidential dram.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

An original apothecary from 1792.

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

Fountain where visitors can earn a license to be mad.