Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

An ancient neolithic tomb that only sees the sun twice a year.

A small chapel celebrating the spiritual bond between dogs and humans.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

A 12th-century fortress containing some of Berlin's oldest buildings.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

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

Old submarine parts have been converted into faux whale fins.

An original apothecary from 1792.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

The location of the last witch trials of Italy, known as "The Salem of Europe."

An unusual manor of stunning beauty, born out of a crippling disease.

This legendary city has been a tourist attraction for centuries.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

Sloth rehabilitation center in the jungle of Costa Rica.

Real bones which are said to have belonged to a Polish dragon.

The first American department store, and home to the largest operating musical instrument in the world.

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The headquarters in Salem doubles as an occult art gallery.

A remarkably intact castle that once was the largest in Ireland.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.