The oldest continuously operating mint in the world that has been making coins since the 9th-century.

A magical, macabre wax museum, beloved by locals, uses real artifacts to depict an assassination from the French Revolution.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

The best way to get a sneak peek at the movies.

A gothic-styled structure that has been the location for several movies.

A glimpse at Walt Disney's vision for a "community of tomorrow," in miniature.

An aptly-named street near the birthplace of the modern LGBT rights movement.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

Volunteer-run library dedicated to exploring five decades of activism history.

This unusual apartment building may be Brooklyn's own version of the Leaning Tower of Pisa.

The unassuming structure was part of a Major League Baseball stadium.

Amid skyscrapers and traffic exists this unique aquatic ecosystem.

An institution dedicated to the towering buildings that make up skylines in New York City and around the world.

The only subway station in the city that still makes use of gap fillers.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

The last remaining building in Washington, D.C., built by H.H. Richardson, one of America's most iconic architects.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

This inn of the court provides a fascinating window into London’s legal and architectural history.

This controversial statue has migrated twice in its life.

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

Dine like an American revolutionary at Colonial Williamsburg.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

This coffee shop lies hidden beneath a historic church.