Lumps of significant stone from around the world surround a flaming monument for peace.

Hundreds of caves once used to store grains and animal feed.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

This local emblem is the oldest and largest dragon tree in the Canary Islands.

An unexpected ghost village lurks on the southeast coast of Tenerife.

An 1814 castle that hosts an exhibit of "explorabilia".

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

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

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

A moody and picturesque riverside ruin overgrown with vegetation.

The remains of a majestic house that was once stood in the crosshairs of the Irish Republican Army.

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

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

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

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

Originally built to monitor fishing, this Victorian tower now educates visitors about the local salmon industry.

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

The largest cave on the island of Menorca was likely the site of Iron Age rites and rituals.

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

An abandoned cable car station located on the Danube stands like a haunted house above the river.

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

The metal leaves on this tree are engraved with the names of Holocaust victims.

This sculpture honors the man who was known as the "Righteous Among the Nations."