Privately owned, and only very few people have seen its interior.

Interior of the real tomb is closed. There is a replica.

"The World Heritage site is managed as a designated wilderness zone in which no commercial operations or resource extraction is allowed. The remainder of the Tiger Reserve act as a buffer zone, comprising nine forest blocks in which sustainable extractive activities are allowed via permits" (IUCN outlook 2020), see also Forum research in link
See www.worldheritagesite.org

Lascaux Cave has been closed since 1963; there is a replica available and also there are other inscribed caves that can be visited.

"Currently, the nominated property is not open to visitation." (AB Ev, March 2024)

Only open to scientists since its existence.

Only open for specific purposes. 'Midway Atoll National Wildlife Refuge is the only area of the monument where recreational activities are permitted. Access was previously controlled by issuing special ocean use permits. However, the Midway Atoll Visitor Program closed in 2012, and no visitor access is currently available. USFWS will evaluate when and if this activity will be able to resume based on a number of logistical and financial factors.' (IUCN Consultation, 2020)
See www.papahanaumokuakea.gov

While at the time of writing, Los Katíos is still closed to the public (UAESPNN, 2020)...

Visitors are not allowed to land on Gough island. Tourists are limited to Zodiac cruises which must not approach the shore and even crew members from passing yachts may not go ashore except in the case of an "extreme emergency". (Landing is allowed on Inaccessible if authorised by the Tristan Da Cunha government and accompanied by local guides who have to travel with the ship from the main island of Tristan)

There is a replica, but the original cave has never opened to the general public

At present, there is no tourism allowed inside the property and it is important to strictly control any tourism access. (AB ev)