Home to what could well be Bosnia and Herzegovina’s most idyllic mosque location, Bosanska Otoka is a gorgeous place in which to spend a few hours or even a lifetime. Otoka (the ‘Bosanska’ has been added in the modern age) is 11km from Bosanska Krupa and featured 24 islets on both sides of the Una, a stunning network of land and water that will almost certainly convince you that early retirement is the way to go. Now, that mosque we mentioned, well, you’ll know exactly which one we mean once you arrive. It is the one on its own island, the only mosque in Europe to be found on an island and it is just about as picturesque as it gets.