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

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

The taxidermied remains of a once-great parrot.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

Eighty million natural history specimens call this gargantuan museum home.

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

A student driver's nightmare.

The remains of Crystal Palace Great Exhibition of 1851.

Abstract dinosaur models in London.

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

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

The anatomical-pathological collection of a man who changed surgery.

This hidden green space is the city's second largest conservatory.

Huge winged monument in the United Kingdom.

These 20-foot jaw bones honor a time when the leviathan bones were a sign that whalers survived the hunt.

The curious and tiny collection contains some very odd objects.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

The remnants of a depressing public toilet are now a hub of ever evolving street art.

A modern English garden of eccentric beasts, follies, and oddities.

Semi-precious Blue John stones have been mined in this cavern system for centuries.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

A century-old tradition has culminated in a small but singular collection of feline effigies.

One of the shortest streets in York has an especially odd name.