Immortalized by artists, this church incorporates a medieval lighthouse into its shoreside structure.

The world's largest solar furnace uses 10,000 mirrors to concentrate the sun's rays to generate power.

Large Hadron Collider and the Birthplace of World Wide Web.

In one of the world's smallest countries, a royal's personal winery is open to the public.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

It's always summer at the beach inside this former airship hangar.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

The burial place of 14 of the executed leaders of the Easter Rising.

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

This Neolithic passage tomb forms part of a World Heritage Site.

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

These moss-covered medieval ruins tower atop the smallest of Ireland's Aran Islands.

These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

After it was swallowed by a Georgian mansion, this medieval castle remained forgotten for centuries.

The chaotic studio of one of the 20th century's most important artists has been preserved down to the dust.

An ancient chamber filled with wonderful rock art and a Neolithic carving of a human face.

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

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.

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

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.