A hidden tunnel leads to an abandoned slate quarry that's now a secret swimming spot guarded by cliffs.

This 1776 beacon on the coast of Wales is said to have a ghost called Raymond, the last lighthouse keeper.

One of the few surviving street funiculars in the world.

The world’s only museum dedicated to baked beans.

A 19th-century funicular railway shuttles visitors up this surprising sea cliff to one of the world's largest camera obscuras.

The world's smallest movie theater runs on solar power—an attraction in itself.

The longest and tallest aqueduct in Britain can actually be sailed across.

The remains of centuries of copper mining appear like an alien landscape.

A wildlife paradise, this island is one of the world’s most important habitats for burrow nesting seabirds.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

The stately remains of Llywelyn the Great's mighty fortress.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

Three bridges straddle a stream, one stacked upon the other.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

A subterranean playground in an abandoned slate mine.

The only place where can you share a seat with the bums of the Fab Four.