This once-derelict building is now one of the most beautiful bookstores in the world.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

This snug medieval lane is one of the narrowest streets in the world.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

Packed to the ceiling with antique taxidermy and hunting arms.

A stunning 18th century pharmacy and medieval chemist's collection.

Something's watching you.

The first archaeological site discovered by aerial photography.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

An ornate aviary built during the Victorian trend of collecting exotic birds.

A tribute to all the green-thumbed workers who tend London’s public parks and gardens.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

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

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.

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

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

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

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

This one has sailed five times as far as Sir Francis Drake's famous ship.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.