Come for the flowers, stay for the bats!

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

Amsterdam's former hotspot for public executions and dissections.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

The history and future of cannabis.

Museum preserving torture methods from the past.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

An ancient Roman relief beautifully preserved on the façade of a house.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

See how paper is made the old-fashioned way.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

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

Traditional 11th-century outdoor tannery.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Sofia's legislative center is continuously reinventing itself.

"Unity, Creativity, Beauty."

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

The most visited, and possibly most controversial, museum in Germany.

A delightful museum entirely dedicated to the tiny homes of dolls.