This house, built in 1716, was the governor’s mansion during the mid–18th century, when Portsmouth was the state capital. (Who knew?) After a period as a private home, it was opened to the public in the 1930s. This stately brick structure with graceful Georgian architectural elements is a favorite among architectural historians for its wall murals—said to be the oldest murals still in place in the U.S.—early wall marbleizing, and original white pine paneling.