The final resting place to 300 Victorian-era pets hides inside the city park.

The largest of London's subterranean rivers and once a mad, bad center of London life.

It’s fun to stay at the YMCA… but at this London outpost, it’s even more fun to eat the Bombay aloo.

The world's longest continuously running show has played at this small West End theater since 1974.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A Byzantine-era church hidden in a wooded area below the Acropolis.

This Byzantine Church was moved from Paris to Athens block by block.

Hidden beneath the streets of London is a secret subway that only carried mail.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

The world's oldest optical museum is an odd collection where the exhibits look at you.

A mysterious artist-run cabinet of curiosities and library.

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

Designed by the architect who also had a hand in crafting the Westminster Abbey and Bristol Cathedral.

The collection contains over 25,000 items and details the painful dental practices of the past.

The townhouse where the English poet created some of his most influential work has been preserved in tribute.

The canine-themed book collection claims to be Europe's largest dog library.

An eccentric Victorian aristocrat's enormous collection of medieval armor and weapons from around the world.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

This bookstore serves recipes from the cookbooks on sale.

Home of one of history's most famous cartoonists just as he left it.

This educational institution and reference library specialize in the psychic arts and mediumship.

English antique dealers with a taste for the unusual.

The British monarchy's stamp collection is one of the most impressive in all of Europe revealing generations of royal nerdery.

More than a million titles fill the labyrinthine shelves of this prestigious private library.