The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

The discovery of these rare, ancient artifacts led to the creation of a new museum.

Head to the mountains to catch a glimpse of Spain's endangered subspecies of brown bear.

Whether they are bulls or pigs, these ancient animal sculptures are fascinating relics.

This enchanting green space houses a labyrinth lined with toxic plants.

Seaside ruins of a settlement that date back to the first century B.C.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

Rare karst landscape eroded from a flat seabed.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

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

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

At high tide this strange footbridge appears to have no purpose whatsoever.

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

The longest stone bridge in England has an impressive history that dates back over 700 years.

This 600-year-old tower was built as a comfy residence for cherished pigeons.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

The ancient tomb acts as a calendar that keeps perfect time.

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

A well-preserved 2nd century fort where moles are the archaeologists.

Western Europe's only representation of a Roman goddess still in its original location sits in an unassuming park.