A giant Troll lurks under one of Seattle's oldest bridges.

A walk through the historic city center, under the streets of Seattle.

Offering commanding views of the California coastline, this restaurant was a hub for the artists and bohemians of Big Sur.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

A flooded Mexican cave that hides a river beneath the water.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Eduardo Kobra’s breathtaking 32,300-square-foot graffiti wall took over Rio’s Olympic Boulevard.

A 125-meter long "tribute to the Brazilian people."

Beautiful public park off the beaten path and away from tourists.

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

World's largest barrel containing an inn.

Fantastic views and thousands of love locks.

This wooden hotel is a temple to German sustainability and forest conservation.

Carved fountains poignantly placed in parks and in front of special monuments.

Legendary site where an evil bishop was devoured by rodents.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

After years of being casually peed on by humans, this tree is peeing back.