Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

This 400-year-old tree is actually an immigrant from North America.

The narrowest street in Paris.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The site where two doves fell in love.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

This modest marker near Notre Dame identifies the very center of Paris.

This demon atop the Notre-Dame de Paris looks utterly bored.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The beautiful baroque library of the Hapsburg empire.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

Baroque celebration of the end of the Great Plague of Vienna.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

A monument dedicated to a lone, brave invader.

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.