Modern megaliths form this work of cosmic, Celtic landscape art.

The former seat of power for the Balliol dynasty.

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

360° views of the city plus five floors of optical illusions and hands-on science.

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

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

Reputedly based on the tomb of Jesus Christ, this crypt is the oldest surviving structure of any cathedral in England.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

The stunning interior of this Gothic church is covered in ornate gold details.

Museum about life, death, and cannibalism in the Stone Age.