World's largest Christmas store.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

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

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

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

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

Canada's largest graveyard boasts a lot of noteworthy artifacts as well as its own computerized mapping service.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

A contemporary fresco movement illustrates the region's rich history.

One of the largest underground systems runs under Canada's largest urban center.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This 18th-century sundial was designed to calculate the date of Easter each year.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

This modest marker near Notre Dame identifies the very center of Paris.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

The celebrated eyesore created by starry-eyed sweethearts.

The video game-themed street art first popped up in the French city.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

This bridge was constructed from the rubble of the infamous Bastille.