This irregularly shaped sea fortress has defended not one but three different sovereign states.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An ancient Egyptian temple in the middle of Madrid, Spain.

This Art Deco masterpiece has stood in for some of the most famous buildings in comic book history.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

From lefty Jewish gathering site to hip cultural site in just 80 years.

Montreal's colorful subway station shows its support of the local LGBT+ community.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Two thirds of this Montreal neon icon has survived to flash another day.

Small ship votives hang from the vaulted ceiling of this port-side church with a Latin inscription on the wall.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

A quirky and charming restaurant founded by artists.

Part bookstore, part café, and part forest.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

Frida Kahlo's childhood home, now a museum of her life and works.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.