A standing relief of a Norman knight whose posture marks him as a Crusader.

A collection of housewares from recent Irish history adjoined by a tower from ancient Irish history.

The largest portal tomb in Europe has a capstone weighing around 150 tons.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

A Neolithic passage tomb said to have sheltered two legendary Irish lovers.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

A sacred well steeped in Pagan roots on the West Coast of Ireland.

This controversial Irish show cave is home to a massive formation known as the Great Stalactite.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

A remarkably intact castle that once was the largest in Ireland.

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

300 years of pharmaceutical history on display.

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

After 11 years of reconstruction work, Slovakia's finest hilltop chapel complex is finally reopen to the public.

The remains of an entire Roman city can be explored in this interactive museum.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Once the home of a hermetic monk, this cave now houses a small church.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.