The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

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.

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

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

True to his word, George Swanson is buried in his white 1984 Corvette.

D.C. once had its own tiny rival to the New York Stock Exchange.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

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

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This colorful statue welcomes visitors to a Barcelona park.

An early 20th-century bullring converted into a modern shopping center.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.