Murals of the wild parties once held on the frozen River Thames.

The taxidermied remains of a once-great parrot.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

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

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

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

This luxury shopping lane has been protected by its own tiny police force for over a century.

Public access to clean drinking water was an instant hit among the masses.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

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

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

An unusual round church in London with a Templar past.

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

This preserved puppy was an adorable beacon of charity.

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

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Eighteenth-century home, where Herschel discovered the planet Uranus.

Padlocks cover this rickety footbridge with love.

Where condemned pirates met their grisly end at the gallows on the River Thames.

At this rare mosque in Tbilisi, Sunni and Shia Muslims pray side by side.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.