Architectureal fantasy quarter of Rome.

Nobles would stage mock naval battles on this large lake at the Royal Palace of Caserta.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

This magical-looking island is notorious for the misfortunes suffered by its owners.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

The final resting place of soldiers' loyal canine companions.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

England's most notorious suicide spot.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

The largest greenhouse in the world is home to over one million types of plants.

One of the earliest relics of Italian art is this ornately equipped stone soldier.

Fortified medieval tower house with lovely roof garden.

Pilgrimage site for star-crossed lovers.

Miles of man-made caves and tunnels are currently used for cultivating mushrooms.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

This mysterious, medieval cathedral remains unbuilt but fiercely protected.

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

A particularly disconcerting tribute to Irish martyrs.

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

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

An ancient neolithic tomb that only sees the sun twice a year.

Northern Ireland's Brobdingnagian stepping stones.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.