An eerie collection of the surviving structures from a past celebration of the future.

The world's largest wooden structure.

Single runway interrupted by a busy road that cuts across its middle.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

A modern day curiosity cabinet.

A museum, art project, and institution that demands we look at the world around us in a strange new way.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

These four islands right offshore have waterfalls, colorful lights, fancy buildings, and a secret purpose.

America's most famous piece of self-built architecture.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

This whimsical fountain pays tribute to Toronto's four-legged friends.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.