Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

An abandoned stretch of highway, deteriorating next to the operational one.

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

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A toxic ghost town sitting atop a massive coal fire.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

Nine nice parcels of land along a flight path offer a quiet respite... until a plane soars overhead.