Bulgaria's latest tourist attraction, this small volcanic island makes for a fun day of exploring. The island, which has served as a religious retreat, a prison and pirate bait (according to legend, a golden treasure is buried in its sands), is today dominated by a lighthouse and a monastery, where visitors can sample various healing herb potions. It's also possible to spend the night in a monastic cell (rooms from 80 lv to 120 lv); email [email protected] to book.