An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

Inside a London bookstore, a fireplace that once belonged to the illustrator responsible for a famous set of tarot cards.

The Art Deco artwork depicts gilded carriers of deadly illnesses.

This sculpture encompasses the emotion of rail travel.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

An entertainment center in a huge transparent tent.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

The largest underground lake in Europe.

Depending on how it is measured, this lighthouse can claim to be the tallest in Europe and the tallest conventional lighthouse in the world.

The sunlight passing through the opening of this huge cave system creates a magical effect.

Three underground crypts and a pointed arch under the bell tower make this cathedral unique among Romanesque churches.

Macabre symbols of death and mummies on display set the tone of this Italian purgatory church.

One of the largest caves in the world open to the public.

This lurid German fountain plots the sad course of marriage from dating to death.

An ornate sculpture of an ox in repose marks the former entrance to Nuremberg's medieval meat market, which was destroyed during World War II.

This strange sculpture depicts a giant nightmare hare crushing a man to death beneath its colossal bulk.

The final resting place of one of Germany's most accomplished Renaissance men.

After this historic church was destroyed by World War II bombing, its blackened shell was left standing as a monument.

Striking occult iconography on a medieval German church.

This gateway to subterranean Hanover plays jazz, pop and rock to surprised passersby.