France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This elaborately-carved white marble fountain was built to stand outside the Detroit Opera House.

Once the tallest building in Detroit, this Gothic church houses some of the oldest stained-glass windows in the country.

This historic Jewish cemetery sits right in the heart of a Detroit car factory.

This railway-turned-greenway provides a pedestrian link in downtown Detroit and celebrates urban artwork.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

Standing guard on top of an old, vacant ice cream shop.

Collective made up of artists, musicians, and activists.

Opulent downtown movie theater now houses cars as an indoor parking garage.

This feline raises a friendly paw at drivers barreling toward the freeway.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

The unusual burial monument of Arizona's first governor.

The historic “pink house on the hill” is an architectural gem that now serves as a center for water conservation.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

This small, unassuming street is now a canvas for color and creativity.

The largest cemetery in Chile is the final resting place for more than 2 million people, from politicians to artists.

This sculpture meant to honor the bravery of the Indigenous Mapuche people of Chile proved controversial.

This museum covers 10,000 years of Pre-Columbian Latin American history.

This observatory high on a hilltop in the center of Santiago got its start in 1852.

The gorgeous murals at this open-air museum form the largest street art collective in Chile.

A fantastical and futuristic temple of light built from nine monumental glass veils.