For centuries no one knew there were hundreds of bones and precious artwork hidden beneath this Swiss church.

Artfully arranged bones of 5,800 Austrians.

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

One of the most spectacular 18th-century bridges in Scotland.

The patron saint of spinsters grasps a container of dried blood.

You can spend the night in Dr. Frank-N-Furter's castle.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Staves, storm-calling, and of course, necropants.

This lab's maddening silence is good for business but bad for sanity.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

A famous burial ground with a history both grim and literary.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

Giant, friendly pelicans in Central London, the most unlikely of places.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

An artistic tribute to the famous singer, just around the corner from where he was born.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

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

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

The natural history museum displaying the British bird collections and dioramas of Edward Booth, free of charge.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

An Austrian house of bones filled with hundreds of intricately painted skulls.

Thousands of well-dressed mummies below a monastery.