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

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

This semi-secret storybook hedge maze is also the oldest garden in the city.

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.

Jesus' footprints and the first catacombs in the world.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

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

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.