Inside a $17 Million Upper East Side Mansion Rich in History

Photo Credit: Courtesy of Corcoran / The James Weiss Team

Begin in the library at the front of 163 East 64th Street, with your back to the street. The eye keeps going, ninety feet, past the bar and the music room to the far end of the dining room in one unbroken line. No other house on the block lets you do this. The rest stop at fifty feet. This one runs nearly twice as deep, drawn by the architect John G. Prague in 1872, before the zoning that would forbid it ever…