The world's tallest box hedge is found in a delightful garden.

An 1814 castle that hosts an exhibit of "explorabilia".

The oldest licensed distillery in Ireland.

An Irish peat mine has become a stunning sculpture park.

The ruins of a sixth-century monastery sit on the banks of the River Shannon.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

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.

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

One of the largest caves in the world open to the public.

These pools have been abandoned for over 20 years.

The Adriatic's most famous wind can be reliably experienced in the city's Marina.

This Roman monument is surrounded by more recent construction, offering a stark contrast between ancient architecture and the modern urban landscape.