The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

This recreation of a 19th-century dime museum is full of oddities.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

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

A curious collection dedicated to human and animal anatomy and pathology.

These morbid carvings remind churchgoers of the inevitability of death.

Theme park featuring miniature replicas of European monuments.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Climb inside an iron crystal magnified 165 billion times its normal size.

This 1920s Dutch barge is now a floating bookstore.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

An artistic tribute to the famous singer, just around the corner from where he was born.

The television series' iconic giant foot was borrowed from this classical painting.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Rebuilt remains of a temple to Roman god Mithras.

One part local history, 99 parts gruesome haunted house.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This tiny store is your one-stop shop for all sorts of rare and wonderful buttons.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.