Vibrant street art created with mixed media.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

Deadliest lake in the world suffocated over 1,746 people in one night.

A Moroccan getaway in the mountain range that plays the Himalayas' stunt double.

This amazing oasis of art and plants is hidden on the outskirts of Marrakesh.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

A historic hill of tall tales, with one rather special tree.

This secluded walkway overlooks a magnificently wild London green space.

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.

This 1920s Dutch barge is now a floating bookstore.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

A kaleidoscopic warehouse-maze of handmade neon signs.

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

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

The first green space constructed on an elevated viaduct.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

One of only two commuter aerial tramways in the United States.