Four alabaster giants contemplate the tides on the shore of Denmark.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

This center tells the story of one of the most famous battles in Irish history.

These Neolithic burial mounds and a still-intact passage tomb may have solar calendar significance on the spring and autumn equinoxes.

One of Ireland's best-preserved chambered cairns can be found next to a wishing tree.

This European portal tomb has a capstone that weighs around 150 tons.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

A hugely vast Irish landscape of barren rock that stretches for miles.

This 5,300-year-old tomb with mysterious carvings crowns an Irish mountain.

This Bronze Age tomb is the centerpiece of a clearing within a beautiful Irish forest.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

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

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

Huge standing stones mark a site of megalithic mystery.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

World's largest working waterwheel has been around for over 150 years.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

The 5,000-year-old megalith is believed to be Scotland's tallest standing stone.

A whale's jawbone and a malfunctioning harpoon welcome you to the village of Bragar and its lore.

A magnificent, iconic stone tower in the Scottish Highlands.

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