High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

One man's homage to the sun continues to grow like a glass fractal.

Rippling sand dunes frozen in the Arizona rock.

The drama of nature in full effect in this Nevada State Park.

Where NASA's satellites and rovers phone home.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

Lavish royal estate punctuated with heated greenhouses.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

This sprawling mini-golf empire is an impressive testament to a disappearing attraction.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

Two adjoining collections of 19th-20th century physics apparatuses and instruments.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

In the most arid desert on the planet, the world's leading telescope allows astronomers to see more than has ever been seen before.

One of the world's largest telescopes, stares into the night sky with two huge mirrors.

This giant dish located in a sheep paddock was the primary receiver of Apollo 11 TV transmissions.

An auroral research program that superheats the ionosphere.

A science teacher's dream.

An enormous park-like oasis, full of famous Chicagoans' graves.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.