This crumbling industrial fortress has attracted daredevils, filmmakers, and historians.

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

Every year, the colorful murals of Montreal get a complete makeover.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

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

Futuristic apartment blocks are the backdrop for Montreal surfers hangin' ten on the Habitat '67 standing wave.

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

A swaggering, monumental souvenir of the most extravagant party Montreal’s ever thrown.

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

The oldest known university in the world is in Fez, Morocco.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

Traditional 11th-century outdoor tannery.

The other side is actually green.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

This stunning mass of ice spans 121 square miles and is still growing.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

This medieval castle is filled with an eccentric collection that ranges from ancient Egyptian artifacts to taxidermy to a mummified hand that was cut off during a duel.

One of the oldest bridges in Norwich was used during the English witch trials and is said to be haunted.

Come for the springs; stay for the mud bath.