In 1609, when Henry Hudson sailed up the river that would soon bear his name, there was little to see. Within a few decades, however, the New World's grandest encampments had emerged on its banks. Gregory Long's Historic Houses of the Hudson River Valley (Rizzoli, $55) celebrates the region's architectural history, from the prim cottages of the Dutch settlers to the lavish mansions of 19th-century interlopers.
—Amy Farley