A mythical garden that once grew the golden apples of wisdom is said to have existed in this ancient Moroccan city.

Numerous impressive carvings are embedded in the trees lining this street in Marrakech.

Mosaics, storks, and brothels—this ancient city has it all.

An eerie former warehouse turned cistern turned movie set.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

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

The artwork is tucked within a cave on a tiny Scottish island only accessible at low tide.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

One of the world's oldest trees comes with a Welsh legend intertwining it with a spirit prophesying death.

Legend says this cave housed a 16th-century cannibal and his family of 48.

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

Mysterious chains and iron stakes adorn this strange grave, with no explanation.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

The atmospheric road was never meant to be so creepy.

Petrified footprints of one of the very first vertebrates to walk on land.

Legend says the water within these mysterious sacred springs stays cold even when boiled.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

This single room has survived the centuries with almost no deterioration.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

A proud bronze billy stands as an eternal symbol of Ireland's oldest festival, where a goat is made king.

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.

This ancient Irish tower could easily have stood in for Rapunzel's prison.