Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This Italianate house was the childhood home of the prominent Canadian painter, Emily Carr.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

This historic Victorian hotel has a scandalous history of affairs and murder.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

The whimsical twist of this spire was either caused by the Devil, an unexpected virgin, or lead.

Come for the flowers, stay for the bats!

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

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

An abandoned tank sits in an empty London lot as a symbolic middle finger to local city planners.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."