Largest lake in Great Britain measured by surface area.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A common entry point to the Griffith Observatory trail holds its own wonders.

A beautiful oddities shop crammed with strange and morbid curiosities.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

Rustic natural hot springs in the deciduous rain forest.

Quite simply the largest tree in the world (by volume).

Experience park where visitors are told to expect the unexpected.

The longest navigable underground river in the United States is home to countless blind and albino animals.

Private collection of art inspired by cabinets of curiosity.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

Once the most densely populated place in the world, this island is now a ghost town.

The 10,000 Torii shrine.

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

The second oldest continuously operating bar in Louisiana.

Rising from the sea like a stone monster.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.