A 13th-century convent where St. Margaret of Hungary spent her teenage years.

Built as a defensive structure, this medieval walkway road offers a unique view of the village of Brisighella.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

A monument to the Turkish librarian who delivered books on the back of a donkey.

Wondrous stalactites house thousands of bats in these African caves.

These naturally balancing rocks were pictured on every Zimbabwean banknote, up to the 100 trillion-dollar note.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

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

The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

Brussels' favorite peeing boy has a sister.

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

As one of the world's largest hydroelectric dams this plant took two countries to get built.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

Spanish religion mixed with local architecture has yielded a network of churches unlike any other.

Alexander Hamilton, a founding father for the United States, was an immigrant and born on Nevis.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

This church was transported brick by brick from the ruins of a 16th-century city into Panama City's current historic district.

This Costa Rican chapel is the most metal church in the world, literally.

An important Mayan religious and trading center dating back to 200 BC.

Its sunny hues are believed to have inspired the town's color palette.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.