Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

The former hotel where Tesla invented the radio.

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

The preserved house of a jazz legend still echoes with his music.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

One of the last Jazz Age "Wonder Theaters" in New York City.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

A hands-on traveling collection of the innovative devices of yesteryear.

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

Elevated freight railway turned wildly successful urban park.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.