In 1927, a biplane disappeared while attempting to complete the first non-stop transatlantic flight between Paris and New York City. This memorial stands at the last place it was seen.

This island castle contains enough secret passageways to support a season of Scooby-Doo episodes.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A bizarre house filled with an astounding array of collections.