The Avenue of Mausolea is a series of grand palatial tombs.

The cell which saved the life of Ludger Sylbaris, "the man who lived through Doomsday."

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

The lesser-known cousin of the Great Pacific trash island.

Established in 1853, this crumbling cemetery sits forgotten on the corner of Church and Chapel in Gold Country.

A Biblically notable site over the ruins of an ancient city that is now a protected World Heritage site.

A decommissioned submarine base makes a great space for graffiti art.

The palace of the King of Kings, burned by Alexander the Great.

An abandoned aircraft sits submerged in a lake in the Alaska wilderness.

A long abandoned hospital building on the outskirts of NYC.

A repository of Pasadena history.

The last orange grove of the San Fernando Valley is owned and protected by CSU Northridge.

A unique collection of Soviet military artifacts lies hidden away in a disused train, in the unrecognized Eastern European republic of Transnistria.

Liquor and flowers mark a holy site for Indian motorcycle riders.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Luxurious devotion and 500,000 images of Buddha in Myanmar.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

The once great capital of Egypt now crumbles forward as evocative ruins.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

Stunning wetlands ablaze with pink lotus flowers.

This famous city eluded concrete detection until the early 2000's.

This medieval fortification has weathered the centuries better than any other structure from its era.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.