Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

It houses the remains of a 17th-century version of the Titanic.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

One of few surviving standpipe water towers in the U.S.

The magic's in the hole!

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

A kitschy, creepy St. Louis mainstay.

A whale of a public art display towers atop Juneau's cruise ship dock.

The first Russian Orthodox church in North America and an Alaskan landmark.

The ruins of a town wiped out by the second-largest earthquake in recorded history.

One of just a few cities in the world to base their center of government on an island. Others: Paris and Osaka.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

The only castle in North America to ever house European sovereigns.

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

Low tide reveals 8,000-year-old rock carvings in Southern Alaska.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

This is not your typical jungle gym.

Less a museum than a bizarre fantasy world created by artists and engineers.

A trading post in the North Pole where children send letters.