The striking and little-touristed ruins of an ancient city destroyed and rebuilt by the Aztecs.

A formerly derelict railway workshop is home to a new world-class contemporary art museum in Central Mexico.

This ornate church designed by a self-taught architect is an eclectic masterpiece in the heart of Central Mexico.

This singular Mexican structure is considered a masterpiece of the Tapatía architectural school.

Suspended above the ground in a thicket of towering Georgia trees is a modern architectural wonder.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

Jule Körner's house full of bizarre architectural details.

Architectural monsters are devouring this palace's every door and window.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

An architecturally-focused antique shop.

A colorful architectural gem in Seattle's uniquely modern Central Library.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

Every inch of this chapel is covered in craftsmanship from across the world.

This Arabesque Italian castle was built with a primitive, if ingenious, air-conditioning system.

A striped 12th-century basilica sits in the countryside of Sardinia.

This amazingly preserved Doric temple was abandoned before it was ever completed.

A battle between nature and architecture in the Cambodian jungle.

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

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

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

This 16th-century monastery has been turned into a surrealist architecture compound.