A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

A trash dump made beautiful by nature's power.

The southernmost outpost of the Russian Empire in colonial America.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

This lesser known Hearst estate is a fairytale village built from the stolen bones of historic European buildings.

Where the line between entertainment and aerospace blurs.

Abandoned anti-ballistic missile base.

The first life claimed by this record-breaking peak wasn't lost to exposure or a fall but rather lightning.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

This historic cemetery built for victims of the epidemics that swept Guadalajara is shrouded in macabre tales.

The most complete statue of this Aztec god sits a top a throne carved with images of hallucinogenic plants.

An extravagant 18th-century fountain built with bits of broken ceramic.

A quirky and charming restaurant founded by artists.

A B-17 bomber stands as a memorial to the residents of Tulare County who served in World War II.

A scientific repository of goiters, boils and other ailments throughout Mexican history.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.