Virgin Islands National Parkis located in the United States territory of the United States Virgin Islands. It comprises a large part of the island of Saint John and adjacent ocean, and all of Hassel Island.
As stated in the foundation document:
The purpose of Virgin Islands National Park is to preserve and protect for public benefit and inspiration outstanding scenic features, Caribbean tropical marine and terrestrial ecosystems in their natural conditions, and cultural heritage from pre-Columbian through Danish colonial times.