Wentworth-Coolidge Mansion is a 40 room clapboard house. It was declared a National Historic Landmark in 1968. The site is a New Hampshire state park. It is located on the water at 375 Little Harbor Road, about 2 miles southeast of the center of Portsmouth.

Wentworth Mansion

Wentworth-Coolidge Mansion is a 40 room clapboard house. It was declared a National Historic Landmark…