Places solarconstant Wants to Go

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.

Highly spherical boulders on the shores of New Zealand.

Huge hole looks down onto an underground beach populated with sea lions.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

Roman ruins top white travertine terraces formed by ancient hot springs.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Gothic tower where Lord Alfred Tennyson wrote the poem "The Sleeping Beauty."

One of the largest open-pit copper mining operations in the entire country.

The oldest wind turbine in Europe, constructed by a group of friends in 1932.

Egyptian treasure trove of fossils documenting the whale's transition from land mammal to sea creature.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Historic site where Native American hunters once trapped and killed buffalo.

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

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Ruins of a German castle on top of a towering stone pillar.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

A "haunted" landmark on the coast of Southern California.

A castle perched precariously over the Crimean Sea.

Where NASA's satellites and rovers phone home.

Modest by day, illuminated majestically at sunset.

A sacred lake composed of over 300 separate pools of highly concentrated minerals.

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

The curious underground history of keeping Paris clean.