The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

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

Climb inside an iron crystal magnified 165 billion times its normal size.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Pop culture has helped to keep this iconic British building from being destroyed.

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

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

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

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Ride the subways of yesteryear.

Once a black market electronics marketplace, now an otaku shopper's paradise.

A magical place that lets you play in and explore the world of Studio Ghibli.

A Volkswagen Beetle decorated with millions of beads connects Mexico's past and future.

An airy Art Deco space devoted to the weird and wonderful folk art traditions of Mexico.

Mexico City's largest market contains a Willy Wonka-esque wonderland.

Visiting this cacophonous collection of vintage novelties is like stepping into the mind of a crazed toymaker.

Frida Kahlo's childhood home, now a museum of her life and works.

A full-size replica of this well-preserved temple lets you take a walk through the Mayan age.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

One of the world’s most colorful cemeteries, where each pigment is symbolic.