The final resting place to 300 Victorian-era pets hides inside the city park.

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

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

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

The curios of pharmacist and collector Henry Wellcome.

An unusual round church in London with a Templar past.

One part local history, 99 parts gruesome haunted house.

Eighty million natural history specimens call this gargantuan museum home.

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

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

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

The sign at the garden gate reads: "These Plants Can Kill."

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

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

Once considered a marvel of engineering, this 107-mile canal played an integral role in building New York City.

This 150-year-old train station and caboose have been turned into a railroad museum, enjoyed by young and old alike.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

A historic town sits upon the site of a long-lost 18th-century trading community.

The first neighborhood to implement the Garden City model in its suburban planning.

Take a step into the workshop where Edison and his employees revolutionized the world.

Filled with history, this cemetery is maintained each summer by a few hungry goats.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.