The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

A historic scientific breakthrough that crosses nine borders.

First point in the Struve Geodetic Arc, a 19th century undertaking to measure the Earth's size and shape.

The Forest Service's surprisingly sophisticated collection of wildfire prevention art features America's most beloved bear.

A wacky, UFO-shaped house in a suburban neighborhood.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

Located on 420 acres in the high desert, this spiritual center is dedicated to the "science of the future."

One of Frank Lloyd Wright's final works was this UFO church.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

The only Frank Lloyd Wright-designed structure in the architect's hometown.

Granny Smiths and Fujis can both be traced back to Kazakhstan, where apples still grow wild.

A stranded woman lived alone on this remote island for 18 years, inspiring the great children's novel "Island of the Blue Dolphins."

The largest piece of no man's land left on Earth.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.