Grand Orthodox cathedral with walls filled with frescoes and icons.

A striking symbol of the Bulgarian capital.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

This building has two facades of clashing architectural designs.

Sofia's legislative center is continuously reinventing itself.

"Holy Wisdom" overlooks the city that became its namesake.

A vast Communist-era exhibition space in the Bulgarian capital.

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

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

A fortified city, home to a remaining population of five families

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

A recreation of the bar from the classic 1942 movie “Casablanca.”

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

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.

Under some of the darkest skies east of the Mississippi, this park invites you to look up into the Milky Way.

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

A unique museum focusing on the history of carpets and fabrics from different tribes and eras in Moroccan history.

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

Western Australia’s heavenly staircase is not for the faint of heart.

A dazzling display of lights and crystals.

On the upper deck of this church-owned parking garage stand eight pillars topped with different Catholic saints.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.