The world's largest fire hydrant is supposedly tornado-proof.

The ghostly remains of an accidental sea.

Version of the French Riviera destroyed by the sea.

Along a California highway is a kind of Jurassic Park made of metal.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

From the Difference Engine to the Cray-1, all under one roof.

The oldest house in the capital of Silicon Valley.

A giant chess set, minus the psychedelic drug trip.

This giant shopping mall still holds signs of its automotive past.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

Neoclassical Revival mansion and set of horror cult classic Phantasm.

On the Oregon coast is a natural hole that seems to be draining the sea.

A winding path built in secret on the edge of the continent.

A sparse, solitary sequoia still stands as a living tribute to the famous conservationist who planted it—but it's dying.

A historic hotel in an old California railroad town with a rowdy reputation.

Millions of numbers carved in glass represent the tattoos forced upon victims.

This area was once known for being a lawless haven for rough-and-tumble sailors, earning the maritime-themed nickname "the black sea."

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

One of the now-less-hidden floral gems of the "Emerald Necklace."