Massive stele returned to Ethiopia after 70 years in Rome.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

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

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

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A striking symbol of the Bulgarian capital.

A beer pipeline runs beneath Bruges.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A hidden three-foot-wide house separates these two regal churches.

A statue commemorating a Polish dog who took his role as man's best friend very seriously.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

This space rocket-like Buddhist stupa sits atop two giant arches and can be seen from out at sea.

This fort dates back to 1588 and was colonized by the Portuguese, Dutch, and English and sits prominently on the Indian Ocean where azure water lap the coast.

This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.

This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

An ancient stone fortress considered by many to be the eighth wonder of the world.

A lively circle of dancers in the Georgian capital commemorates an ancient rite of spring.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

A shipwreck named Desire at the shore of Batumi.

The legendary fortress of a female Kurdish warrior leader.

An ancient sanctuary that has long been a holy site for the Chaldean Christian Church.

An ancient fortified mound raised over the millennia from settlements built one on top of the other.

The sacred shrine of the Yazidis.