Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

A treasure trove of pathological, forensic, parasitological, and anatomical specimens.

Ship-sized kinetic sculptural fantasy.

There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

Some of the smallest works of art in existence.

This enormous spiral sculpture looks strangely out of place on the edge of a housing development.

These crude contraptions were used to aid in the mining of lead, silver and gold.

A magnificent winding road through a steep valley, with deep natural caverns at the bottom

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

The home studio one of Britain's first independent record producers is also the site of a murder-suicide.

London's amazing modernist public square that never was.

The sculpture of the deceased cockatoo flops atop its personal plinth.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

The site of London’s first coffee house has been serving refreshments of one kind or another for 360 years.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A student driver's nightmare.

A relic of medieval punishment marks the center of this quintessential English village.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.