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

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

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

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

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

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

One of the biggest Buddhist stupas in Europe, hidden from most locals.

The oldest private art gallery in all of Hungary.

Time stands still at this serene burial ground in the center of Budapest.

An industrial site turned into Hungary's most cherished natural wonder.

A forgotten graveyard lost in the tangles of an overgrown garden.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A giant gorilla made of used car tires used to sit sentinel over a Helsinki college campus.

The tallest lighthouse in the Nordic countries was also the site of a bloody World War II battle.

This abandoned villa of makeshift buildings was once the home of dancer Elis Sinistö.

The church's remarkable frescoes incorporate Finnish artist Hugh Simberg's trademark themes of death and the supernatural.

More than 200 eclectic sculptures surround the artist's home.

No matter how many times this community-run sauna gets destroyed, it always rises from the ashes.

Hidden deep in a forest is this geological wonder carved by glaciers.