Museum dedicated to the art of cutting and polishing stones.

Medical museum focused on antique anesthesiology equipment.

This small-town opera house has appeared much more in national culture and history than its charming setting might suggest.

An exhibit of items from the mental institution where Mary Todd Lincoln lived after her son conspired to have her committed.

Dr Barnes' $25 billion private collection of art and arboretum.

World's first "penitentiary," meant to be humane, drove men insane.

The corporeal remains of Napoleon III's dentist rest under this 15-story obelisk.

Yo, Adrian!