A forgotten "city of water" underneath the famous Trevi district.

Five candy-colored villages on the Italian Riviera.

This tiny chapel withstood a massive mudslide and flash flood.

Former villa and estate of James Deering developed to preserve native tropical forests.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

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

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

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.

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.

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.

Its columns were all carved from the same white oak tree.

The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

Colorful and chaotic stacked hotel in North Holland.

Atop this former dutch railway office sits an interstellar work of art.

A miniature city, once ruled by the Queen of the Netherlands.

In the Netherlands, one of the world's largest private car collections can be found.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

The only structure in a remote mountain pass, these colorful cubes are visible from miles away.

Dozens of large, brightly-colored paintings adorn the walls of the "street art capital of Iceland."