Ride the subways of yesteryear.

San Francisco's newly reopened hands-on science museum.

The private clubhouse for the members of the Academy of Magical Arts.

America's most famous piece of self-built architecture.

Gift shop offering toe tags and chalk body beach towels tucked into a coroner's office.

A hotel and restaurant serving as the mecca of kitsch.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Medical and zoological curiosities for sale.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Towering basalt columns, a creation of fire and ice.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Waterway populated with abandoned projects, including a submarine.

A decommissioned military complex that's now a modern industrial park.

A modern zoetrope on the New York City subway.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

Sniff the Titan Arum's rotting flesh.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

Only hotel where you can legally launder money.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

Compensation for the destruction of a historic shipyard.

The former sign of this immortal music venue is just that--undying.