A wall of chewing gum moonlights as collective art.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

Believe it or not, the now-ubiquitous California avocado originated in Guatemala.

This bridge was constructed from the rubble of the infamous Bastille.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

When flour explodes, it's not a pretty sight.

No one's quite sure where this quirky university tradition originated.

A whimsical sensor instrument for Minneapolitans to play on their walks to work.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

Singapore's landscaping project is home to 18 incredible Supertrees.

After being lost for decades, this striking mural depicting the atomic bomb covers the wall of a busy Tokyo metro station.

Meet the world's longest tapeworm in a collection that really gets under your skin.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

Community bookshelf of 25-foot-tall book spines.

This recently restored timepiece has stood all around Kansas City.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

Ever wanted to can Spam?

The ruins on a deserted tropical island in the Philippines bear the scars of WWII.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

A beautiful bamboo trail tucked in this famous Japanese shrine.