Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

A modern zoetrope on the New York City subway.

An astounding collection of medical specimens, including bits of President Lincoln.

Handsomely crafted representations of our round planet.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

The echoes of a railroad town that solemnly mark the end of the line.