The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

It holds a fabulously designed tribute to astronomer Edmond Halley.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

The broken skateboards that became a poignant memorial to a murdered skater.

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

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

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

A mysterious suspended hand greets unsuspecting visitors at the Tower of London.

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

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

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

An archway adorned with vulnerable flora and fauna.

One of America's founding fathers lived in this London lodging between 1757 and 1775.

London's smallest police station is barely the size of a phone booth.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

The bronze uniforms commemorate the vital role of women during World War II.

These ornate arches show how the course of the River Thames has changed.

This ancient Egyptian obelisk still bears the wounds of World War I.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

The biggest museum dedicated to insects in North America, one of the largest in the world.

A massive Montreal stadium that has seen nothing but trouble since its inception.

Come for the springs; stay for the mud bath.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.