A comprehensive collection of toy and model trains, largely from the mid-20th century.

The oldest stone house in Paris was built by its most famous alchemist.

This museum houses an imposing skeleton army comprised of creatures great and small.

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

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

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

A mysterious Neolithic tomb is perched along the edge of a modern golf course.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

Local legend says the remains of Father Christmas lie within the medieval grounds.

A corkscrew-shaped barn in Ireland.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

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

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

Oliver Cromwell once seized the land under this house, which included the ruins of a medieval abbey that the owner used to build his stately home.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

Ancient Bronze Age rampart that was used into the middle ages.

A devastating booze inferno poured through the streets, claiming several victims who drank it.

Not actually a shop, but one fan's passionate show of support for a rival county's Gaelic football team.

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