Portsmouth Historic Dockyard is an area of HM Naval Base Portsmouth which is open to the public; it contains several historic buildings and ships. It is managed by the National Museum of the Royal Navy as an umbrella organization representing five charities: the Portsmouth Naval Base Property Trust, the National Museum of the Royal Navy, Portsmouth, the Mary Rose Trust, the Warrior Preservation Trust Ltd and the HMS Victory Preservation Company. Portsmouth Historic Dockyard Ltd was created to promote and manage the tourism element of the Royal Navy Dockyard, with the relevant trusts maintaining and interpreting their attractions. It also promotes other nearby navy-related tourist attractions.