The last bastion of Roman presence north of the Alps looms over a German town.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

A beautiful opera house in the heart of Amazonia has recently restarted performances after a 90-year hiatus.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

The ritual has been performed uninterrupted for nearly 700 years.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Scattered throughout London are ancient remnants of the city's former bounding wall.

An incarceration museum on the spot of possibly the oldest prison in England.

One part local history, 99 parts gruesome haunted house.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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

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

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.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.