A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

A medieval house with mysterious alchemical inscriptions on its facade

A closer look at this somewhat faded hotel by the Corinth Canal reveals the architectural undertones of a genius.

This Roman amphitheatre was also the location of the first gladiator school.

A massive bridge forms part of an aqueduct that was deemed an architectural wonder of its time.

A complimentary beverage is offered to the bodega's resident rodents every day.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

A 200-year-old tavern challenges guests to finish a glass of wine while hanging from a ceiling beam.

A network of bells in the pubs and restaurants around Westminster alerts politicians when it's time to cast their votes.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

Giant, friendly pelicans in Central London, the most unlikely of places.

One of the world's largest collections of pathological specimens.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Remnants of the Nazis' occupation of Denmark linger along the sand.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

It's clear this abandoned Art Deco gem was no ordinary cleaners.

This abandoned gun tower was built to defend the River Thames from a French naval attack.

A once grand hotel is being retaken by the wilderness it once capitalized on.

The monument honors the mountaineers who were part of Europe’s best anti-Nazi forces.

Two World War II aircraft lie within the jungle around this abandoned runway.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

A network of fortifications that never saw conflict.

This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

This French Canadian classic is a specialty of the oldest continually used church in Minneapolis.