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

This ancient town is full of stunning Ottoman architecture and streets so narrow trash collection is done by donkey.

An oasis of shade and color amidst the bustle of the old city.

A refurbished locomotive from a bygone era in the middle of the Jordanian desert.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

FIFA deemed this isolated field one of the most remarkable places to play the sport.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

Spend the night in this formerly abandoned traditional Scottish village.

This beach runway is off limits during high tide.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

The first green space constructed on an elevated viaduct.

The history of radiation is on safe display at the foot of a radiation science laboratory.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

When the rain falls, this drain system turns into a musical instrument.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

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

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

The world's second-tallest flagpole stands proud despite dropping rank.

This dark, damp, perilous tunnel is the only passage from north to south Tajikistan.