A 30-acre garden inspired by the principles of modern physics.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

These fantastically named natural pools look like something out of a Scottish myth.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Tens of thousands of ancient rock carvings hidden in the heart of a French national park.

An enormous roadside attraction in the heart of Spain's toy-making hub.

A beautiful display of nearly 50 bells crafted with a unique design and distinct sound.

A museum in the childhood house of a medical pioneer.

A Hungarian pharmacy museum with a box full of mummy powder.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Beautiful antiques and obscure engineering artifacts trace the evolution of phones from rare luxuries to ubiquitous.

The massive white mound and accompanying water terraces are a striking geological oddity.

The remains of an entire Roman city can be explored in this interactive museum.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

An industrial site turned into Hungary's most cherished natural wonder.

A collection of intricate sculptures so small they have to be seen through a microscope.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.

Hungarian self-built castle.

One of the largest barracks of the Austro-Hungarian monarchy's military is now an abandoned ruin.