This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

This influential Renaissance-era library was once the haunt of kings and monks.

Elevated freight railway turned wildly successful urban park.

The largest park in Lviv is surrounded by a network of disused rail tracks.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

Plenty of old carney magic still haunts this photogenic amusement park.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

It was meant to help transport wounded soldiers to a secret underground hospital.

Camels and crocodiles share the black waters of this stunning Saharan oasis.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

This abandoned boat was left in place thanks to its rotting beauty.

A daybeacon pyramid is about all that's left of this island that is said to have sunk due to a pirate's curse.

A grotto replicating one of the world's most famed Marian apparitions sits across the ocean from the original.

This colossal structure and its accompanying angel often play tricks on the eyes.

Civil War Fort on an island in the Boston Harbor.

A wall within the institution displays the names of 13,000 Jews who took refuge in the city during World War II.

A sobering museum dedicated to landmines and the personnel working to remove them from Afghanistan.

The last operating synagogue in Afghanistan is run by Zablon Simintov, the last remaining Jew in Afghanistan.

The West's first incursion into the Afghan world lies buried beneath a military base.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

This colorful but controversial ceiling has been likened to a 21st-century Sistine Chapel.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A magical oasis in the middle of the Negev Desert.