A living memorial to the trees London lost during the Great Storm of 1987.

One of America's founding fathers lived in this London lodging between 1757 and 1775.

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

A mysterious shape catches the eye in this 16th-century painting.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

This storied music venue was once a tavern that housed an Italian Anarchist book club and prohibition parties; today it's a community space for artists and musicians.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

A trailblazing sovereign nation tucked in the American state of Wisconsin.

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

A circus of light and sound forms a sensory ode to an iconic train that will never pass through town again.

This supper-club-turned-concert-venue still serves drinks at its original rotating bar.

The remains of the first punk club in L.A.

Made famous by cable TV, this oddball collection of antiques and collectibles is a cut above the rest.

Known as the Casa de las Siete Chimeneas, this haunted 16th-century manor has a dark, mysterious past.

This sculpture of a rhinoceros suspended above a city square is meant to evoke the weight of the human condition.

Legend has it that centuries ago, a ghost once frequented this candy shop to feed her still-living baby.

Spectacular rock formations host dinosaur footprints and an old hydrotherapy pool.

Nancy Thompson's Home from "A Nightmare on Elm Street."