This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

This sprawling collection hides many charms.

Natural time capsule containing an alien ecosystem.

Inside a beautiful Indian temple is a seemingly magical floating pillar that doesn't touch the ground.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

This colorful creation wasn't always a welcome part of Toronto's Moccasin Trail Park.