Scattered around Atlanta are little doors with big charm.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A 300-ship graveyard, with a few still visible at low tide.

Visible below the waves are memorials to the city's Gold Rush dead.