Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

A prime example of New Orleans' unique architecture these early 20th century homes were built to look like steamboats.

An otherworldly musical haven in The Big Easy.

The crumbling remains of a 19th century fortess.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

This artificial cave looks like something out of a fairytale.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

Walk through Czech history in Prague's largest graveyard.

An enormous and lavish Gothic church in Czechia.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

A church of bones, decorated with 40,000 human skeletons.

The final resting place of the famed German pilot, the "Red Baron."

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Final resting place of the humble physicist who discovered X-rays, and made the invisible visible.

This German bone house contains the remains of some 20,000 souls.

A former Nazi lookout tower with a magnificent view of the Rhineland.

Crop circles inspired this whimsical garden in Germany.

A German apartment building hosting as many trees as human occupants.

Germany's tiniest institution of education.

After years of being casually peed on by humans, this tree is peeing back.