Once America's longest-manned military fort, now an abandoned hulk.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Avoid gangster interaction while window-shopping.

Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

An urban laboratory.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Antiques by the Bay.

Step inside Lucy, the world's largest "elephant."

The most confusing clock in New York.

One kilometer of thick brass rod laid out before your eyes.

A regular looking rock with an unbelievable history.

Neighborhood in Jerusalem is home to the ultra-orthodox haredim.

Elevated freight railway turned wildly successful urban park.

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

A large camera obscura, constructed entirely from digitally fabricated components.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A room in New York City that contains 250 cubic yards of dirt.

A veritable variety of odds and ends.

A Natural History and Science Emporium.

Lucha Libre (Mexican Wrestling) themed taco shop.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

A terrific purveyor of natural history objects and curios.