The island of Santorini is very suitable for European tourists. It is one of the most beautiful island in the world. For Europeans also quite close to home and getting there is cheap, you can swim here up until November and it also has something for the history fans. The island is what remains of volcanic eruption, which was one of the strongest in the last 10 000 years. The last eruption (a small one) was in 1950.
Read more about Santorini here.