Natirar is an estate spanning 491 acres (1.99 km2) in Peapack-Gladstone, Far Hills and Bedminster, in Somerset County, New Jersey, United States. Its name is a reverse spelling of Raritan. The complex was built between 1910 and 1912. In 2003 it was sold by the estate of Hassan II, late King of Morocco, to Somerset County, New Jersey, and is now administered by the Somerset County Park Commission. Approximately 90 acres (360,000 m2) of the estate have been leased to develop that portion of the estate into an exclusive hotel, spa, restaurant complex.