A lush indoor jungle fills this bustling Madrid transportation hub.

This unassuming bookstore in the heart of Madrid is one of the oldest in Spain.

This girder was hit by a bomb during the Spanish Civil War, but nobody knew about it until 2016.

Sometimes called the Banksy of Madrid, Muelle was a pioneer of street art in the Spanish city.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

A masterpiece of Rationalist architecture in the center of Madrid with lizards on it.

This lucky bronze frog was gifted to Madrid by a casino.

The Spanish king's private bathroom embraced the idea of a porcelain throne.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

A living archive of urban activism and space reclaimed.

A flight of this "ghost staircase" has 40 steps on the way up, but only 39 steps on the way down.

A railway station takeout shop sells boxed meals in containers shaped like trains and snowmen that hold the country’s abundant regional delicacies.

A taste of the macabre Tokyo's ritzy shopping district.

This museum celebrates the history of Japanese advertising, from feudal business tricks to modern T.V. commercials.

Museum dedicated to awful artwork.

A showcase of geologic history is home to one of the largest collection of lunar meteorites on Earth.

A giant telephone commemorates the last "crank" call ever made in the U.S.

A haunting collection of the vanished and disappearing natural world.

Maine's only authentic torri gate celebrates a longstanding international relationship that started with the rescue of four sailors.

North Africa's first museum of its kind preserves the culture of Moroccan women and their artistic achievements. 

Automatons that were once removed after one fell from the building.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

The demolished ruins of a poorly located Japanese Love Hotel.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.