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

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

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.

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

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

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

Designed as a reminder of one of the darkest moments in Austrian history.

An ornate private entrance to the Vienna subway built specifically for the emperor.

The topiary maze at the Habsburg hunting lodge.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Visiting this café is like visiting the Austrian grandma you wish you had.

Museum devoted to the artificial language of Esperanto.

Handsomely crafted representations of our round planet.

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

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

Legends surround an ancient tree trunk riddled with nails for good luck.

The solemn exterior conceals an opulent interior of this 17th century church.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

This fascinating museum in an old water tower holds the world's largest collection of Vodou artifacts from western and central Africa.

The curious underground history of keeping Paris clean.