Underground monastery and fortress.

The world's oldest map of the holy land gives us a fragmented glimpse of the layout of biblical nations.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

This restaurant proudly displays bread signed by the 39th president.

Deep scars on the earth left by the Ice Age.

Wading through a small lagoon reveals a secret, wild stretch of pristine beach.

These constructed wetlands naturally filter millions of gallons of treated wastewater every day.

Despite its name, this route in southern Utah offers a heavenly day trip.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

An office built to look like a giant basket.

Model Trains and Much More in Hamburg.

A monument to the man who almost killed Hitler.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

A monument celebrating the idea of reaching inaccessible places.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

Singapore's last surviving traditional village is hidden among giant skyscrapers and modern infrastructure.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This tranquil park with a spiral viewing tower is an off-the-beaten-path area where renowned people have planted a small grove of trees.