This ancient stone necropolis is in danger of disappearing.

A bathhouse from the second Islamic Caliphate decorated with frescoes of constellations, pleasure gardens, and naked ladies.

One man's labor of love, Amman's oldest home has become a time capsule with its doors permanently open to artists and guests.

This cascade of mineral-rich hot springs and waterfalls is an oasis in the Jordanian desert.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

An alien church provides much needed silence in the midst of a Finland shopping center.

A remarkable cabinet of curiosities in an art space in the center of Berlin.

A towering monument to war, located on a beautifully peaceful hill.

A portable, wooden replica (minus the hyphen) of Hamburg’s iconic crooked coffee shop.

This conical hill was built as a testing ground for an engineer known as the Glider King.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A collection of abandoned typographic signs from Berlin and beyond.

This mesmerizing statue of a child wrestling an anteater symbolizes the native culture and biodiversity of São Paulo.

Hidden in plain sight, this lush garden sits atop one of the most iconic buildings in São Paulo.

This "Little Finland" started as a Finnish utopian society in Eastern Brazil.

Site full of incredible prehistoric paintings and archeological findings.

Off-limits and full of venomous pit vipers, Brazil’s Snake Island has a frighteningly apt nickname.

You feel like you're in a forest, but you're actually walking amidst the branches and trunks of a single giant tree.

Built by King Norodom to honor his late father.

More than 100 Hindu temples are slowly being swallowed by the forest.

This former hospital was once one of the oldest mental health facilities in Europe.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

A giant interactive periodic table with real samples of the elements.