A colorful architectural gem in Seattle’s uniquely modern Central Library.

A room in New York City that contains 250 cubic yards of dirt.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A meditative space out of a fantasy story.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

The largest earthwork effigy in the world.

A hotel and restaurant serving as the mecca of kitsch.

Macabre astrological automaton clock dating to the late 1400s.

Hollowed out cedar log tubs set in an ancient towering forest.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Tiki luxury on Nob Hill.

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

Ride the subways of yesteryear.

A beautiful geyser under environmental threat.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Continuing the tradition of the dime museum in style.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Elevated freight railway turned wildly successful urban park.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

Paris' linguistic guide to the international language of, yes, love.

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

This colorful statue welcomes visitors to a Barcelona park.