Fodor's Expert Review Tarrytown House

Two 19th-century mansions—one Georgian, the other a stone Gothic Revival that's a National Trust site—dominate this conference-oriented property, once home to tobacco heiress Mary Duke Biddle. The grounds, high above the Hudson River, are loaded with recreational diversions and include massive specimen trees and antique garden statues amid 26 rolling acres. Most of the mansion rooms serve as restaurants and other public meeting places; modern wings provide the bulk of the guest rooms, each with a desk and free Wi-Fi.