One of the world’s only pink lakes where it's possible to take a dip.

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

A stately palace has been converted into the world's largest cannabis museum.

The curiosities and wonders of pharmacy in a delightful historic building.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

A fantastic Christmas tradition where defecation meets the manger.

A medieval palace holding a millennium of the Crown of Aragon's records

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

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

These 2000 year old remains of a Roman aqueduct are hidden inside a hotel lobby.

A temple to modernity, tucked away amid Barcelona's more well known museums.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

This ancient structure appears Roman, but was constructed during the 16th century and was utilized until 1911.

One of the most photographed locations in the entire city.

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

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

Sofia's legislative center is continuously reinventing itself.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

This building has two facades of clashing architectural designs.

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.

Grand Orthodox cathedral with walls filled with frescoes and icons.