Huge masonic hall in Philadelphia with lavishly themed rooms.

Inside a former cabaret, seven floors of erotic art.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

An antiquated German apothecary on Chicago's North Side.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

Started as a kitchen garden, now the second largest botanical garden in the world.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

DIY collection of eclectic holdings.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

The hidden jewel of Disneyland: a members only playground for the Disney elite.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

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

19th century pendulum and a clock restored by a rogue group of guerilla artists.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

The largest greenhouse in the world is home to over one million types of plants.

The abandoned personal amusement park of the King of Pop.

Delightful disarray of found objects and clutter.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

The largest and most famous wax anatomical collection anywhere in the world.