Places ivinsmargaret Wants to Go

This laboratory has a remarkable concrete roof that measures less than an inch at its thickest point.

Inside a busy metro station, an impressive mural depicts the prehispanic city of Tenochtitlán.

The world's longest outdoor escalator takes visitors to the top of China's largest dam and is also shaped like a dragon.

San Francisco’s condensed garden of incredible plant growth.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

An 18-mile-long tunnel for sewage waste will soon wind within the bowels of Washington, D.C.

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

The oldest continuously operating fish market in the United States.

Partially submerged Buddha heads freckle Chicago’s neighborhoods.

A hot dog stand where the heads are just as hot as the dogs.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

The subtle science of a master molecular gastronomist.

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

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

The author of Uncle Tom's Cabin was neighbors with Mark Twain while living in this Connecticut home.

The only surviving fragment of the lost Narragansett Pier Casino.

Unicorns, elephants, and bears, oh my!

The debris forms a solemn memorial to those who died in a 1963 accident.