This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

Civil War-era Fort designed to withstand invasion and attack, with tricky traps called "murder holes."

Civil War Fort on an island in the Boston Harbor.

Overgrown ruins of a turn of the century island fort that sees very few visitors.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

The site of the tragic isolation of Nipmuc Native Americans left to perish in King Philip's War.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Yo, Adrian!

Huge masonic hall in Philadelphia with lavishly themed rooms.

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

An enormous, inside-out glass globe built in 1935.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Lie in a hammock where George Washington stood.

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

The trials and tribulations of marking Poe’s grave.

Built in just a little over a week this preserved bunker was created to protect our most attractive POTUS while he was on vacation.

A place to eat for on-the-run agents and espionage enthusiasts.

Home to a protest movement, a bombing, and a dramatic change in labor history.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.