This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

Mountain where Jesus was first tempted by the Devil.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This cemetery features modernist statues as strange as its name.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

A marvel of Byzantine engineering under the streets of Istanbul.

This shuttered power plant is now Turkey's first industrial archaeology museum.

The legendary luxury train passage is commemorated with a charming museum inside its former eastern terminus.

Large miniature theme park with 100-plus models.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

1513 Turkish world map, full of European state secrets and snarky commentary.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

Sculpture of a legendary French dragon.

This ancient theater was once the home of fierce gladiatorial battles.

The celebrated eyesore created by starry-eyed sweethearts.

Former hunting lodge of a duke who was an avid collector of impressionist works.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.