A couple of sites in Germany with unsavoury links to Adolf Hitler have been turned into controversial holiday accommodation in the past decade or so.

In 2005, the InterContinental Resort Berchtesgaden opened where Hitler's former Alpine retreat once stood, about 100km southeast of Munich. This was despite strong protests from Jewish groups, notably the Simon Wiesenthal Centre, which described Berchtesgaden as "the seat of evil, where Adolf Hitler, Hermann Goering, Joseph Goebbels and the Nazi leadership took most of the decisions that cost the world 70 million lives". InterContinental pulled out last year and the property is now the Kempinski Hotel Berchtesgaden.

In 2011, Germany's largest youth hostel opened on the island of Ruegen, off Germany's Baltic coast, in a renovated section of the "Colossus of Prora". This 4.5km-long, 20,000-bed resort, built by the Kraft durch Freude ("strength through joy") leisure organisation on the orders of Hitler, was completed in 1939 but the outbreak of war meant it was never used. The Russian army tried to demolish it after the war, but it is said that the eight-building complex was so large, a sufficient amount of explosives could not be found. A luxury holiday-apartment complex is currently under development in another section.

Now comes news that a former concentration camp on the island of Mamula in Montenegro, run by Benito Mussolini's Italian fascists during the second world war, is being converted for holidaymakers. Swiss-Egyptian company Orascom is building a resort in and around the old camp buildings, despite strong opposition from families of its former prisoners living locally, who still gather to remember their lost relatives each year.

The company has reportedly promised to build a room of remembrance, although its website, mamulaisland.com, seems interested only in promoting luxury accommodation, fine dining, water sports and a "party ambience", with no mention of the island's dark past.