The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

A terrific purveyor of natural history objects and curios.

These eerie outliers of the lightning bug family glow a mysterious blue color.

This naturally-sourced hot spring is now home to a clothing-optional resort.

This geothermal hot spring hides beneath a slowly growing mineral dome.

Rustic natural hot springs in the deciduous rain forest.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

These fantastically named natural pools look like something out of a Scottish myth.