Slyly buy a shake in the Parker Meridien lobby.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

Three stories above you, your salad is being grown.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

360° views of the city plus five floors of optical illusions and hands-on science.

A hidden "place of interment for gentlemen."

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

Acres of natural wonders left behind by a socialite-turned-gardener.

360-degree virtual reality chamber physically immerses scientists into their data.

An alley covered with 20 years of bubble gum.

Home to the "Circus" trees created by Axel Erlandson.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

One of the best absinthe distilleries in the United States.

Playable, historic pinball machines fill this Alameda museum.

The memorial to the victims of the Jonestown Massacre carries the names of 918 lost, including one name people wish wasn't there.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

An enormous, inside-out glass globe built in 1935.

The 606 is a decade in the making.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A Museum of Holography frozen in 1974.