Venue for strange sideshow displays and musical acts.

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

East London art gallery showcasing contemporary art from Europe's Eastern Bloc.

Tourists who rely on a transit map to find the iconic Beatles location often end up in a far-off neighborhood.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

This magnificently macabre shield shows the power of chivalrous love in medieval times.

Where's a guy to go after a long, hard day at work?

This coffee shop lies hidden beneath a historic church.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

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

The Columbia Road Flower Market is now open every Sunday, rain or shine.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Abstract dinosaur models in London.

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

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

Russian history in San Francisco.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

San Francisco’s century-old Christmas Tree.

The legendary statue-hating superintendent of Golden Gate Park is honored with... a statue.

Art in the form of a winding, man made crack in stone.

An overlooked and unassuming engineering marvel.

A collection of haunted objects and macabre oddities under one roof.