Kemi, Lapland, Finland
This retired, 3,500 icebreaker carries guests as it ploughs through the Bothnian icefields. During the tour, daredevils can don a bright-orange puffy rubber survival suit for a float in the icy waters. Complete the experience by snowmobiling back to Kemi for dinner or sleep-over at the Ice Castle.
Best for ages: 6+ | £280 | 3 hours