There is a tiny, uninhabited island off the coast of Montenegro in the Adriatic Sea that was once the site of a World War II concentration camp. The camp was occupied by Italian troops under fascist dictator Benito Mussolini.

>> Read more trending stories

Historians claim that 2,300 people were imprisoned here and at least 130 were killed or starved to death.

Now, Swiss-Egyptian developer Orascom wants to convert that abandoned island into a luxury vacation resort.

The Montenegrin government approved a project to transform the islet of Mamula into a resort, complete with swimming pools, a yacht marina, a spa, restaurants and a dance floor. It granted Orascom a 49-year lease for $1.64 per square meter. Mamula's diameter is about 200 meters.

Montenegrin tourism officials have said the resort would attract tourism and help boost the country's economy.

But many family members of the wartime camp's prisoners are outraged.

"To build a luxury hotel dedicated to entertainment at this place where so many people perished and suffered is a blatant example of lack of seriousness towards history," Olivera Doklestic told AFP

Orascom said it'll invest $16.3 million in the project.

Read more about the proposed development here.

See images and video of the proposed development here.