Temporary Burning Man sculpture made of two 18-wheelers.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

Large Hadron Collider and the Birthplace of World Wide Web.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Moss and stone turn this waterfall into an otherworldly liquid veil.

This massive underground salt mine now holds a sci-fi theme park in its depths.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

When the rain falls, this drain system turns into a musical instrument.

A surreal museum of extraordinary industrial objects.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

As the aging humans of this Japanese village die off one local artisan is replacing them with eerie homonculi.

Experience park where visitors are told to expect the unexpected.

A wall of chewing gum moonlights as collective art.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The celebrated eyesore created by starry-eyed sweethearts.

A hand-built folk art installation covered with messages of God's love.

Centuries-old bridges grown from tangled roots.

A gargantuan crystal kingdom.

A layered tribute to the work of mosaicist Isaiah Zagar.

Notorious artist squat renovated into legal studios.

The world's only museum devoted to the wonders of fluorescence.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

On Japan's Tashirojima Island, cats are king.