Ethereal alien hums and haunting whale songs emitting from...a giant sheet of vibrating metal?

Friction between grains of sand cause a curious "singing" sound.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This lab's maddening silence is good for business but bad for sanity.

The Cadillac Ranch for monster truck aficionados.

The birthplace of the Herndon Gas Company.

A human attendant once directed car traffic from this structure before automated stoplights.

A student driver's nightmare.

Cavemen, elephants, and eagles greet passengers driving through the town's main intersection.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

A temporary art piece to celebrate LGBTQ Pride is now a permanent part of Stockholm's traffic landscape.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The second oldest and longest of Delaware's three covered bridges.

100 year tradition of fist fights, marked by marble footsteps.

This 19th century cyclorama acts like an analogue time machine to a different era.

The country estate of renowned Ukrainian-born artist Ilya Repin.

The only home of the famous French impressionist painter open to the public is now a museum and bed and breakfast.

This smiling statue memorializes local cartoonist Bob Montana and his legendary creation.

The dress young Pierce wore prior to his breeching ceremony in the early 1800s is now on display for all to see.

Whimsical woolen creatures have taken over this historic Northern Ireland park.

Beloved children's TV characters freckle the German city's streets.

This colorful statue welcomes visitors to a Barcelona park.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.