Remora
The Financial Times claims that Gustav Rau has the second largest private art collection in the world. I emphasize 'claims' - the largest art collectors are notoriously eccentric. It wouldn't surprise me if Rau's collection were surpassed by the odd Japanese billionaire.
In any case, the collection is, controversially, making a tour. The controversy is over whether Rau is of sound mind. Rau was a doctor in Zaire for many years. And he is also incredibly wealthy - which leaves a large gap between the lines. You don't become wealthy in Zaire without having had to do with Mobutu. But the article doesn't mention the tyrant's name, so one will just have to speculate. Anyway, the Swiss government claims an interest in the collection. Here's the explanation:
"The Rau Foundation might have remained anonymous had the doctor not retired in 1993 to Monaco, where he was later found disconsolately wandering the streets. A Lausanne court declare
“I’m so bored. I hate my life.” - Britney Spears
Das Langweilige ist interessant geworden, weil das Interessante angefangen hat langweilig zu werden. – Thomas Mann
"Never for money/always for love" - The Talking Heads