Risan is a town in the Bay of Kotor, Montenegro. It traces its origins to the ancient settlement of Rhizon, the oldest settlement in the Bay of Kotor. While the Krivošije karst plateau that hangs steep above the narrow shores of Risan bay receives over 5000 mm rain annually (European record), several strong karst springs that form a short brook collect in the narrow cultivable belt at Risan.
The earliest mention of Rhizon dates back to the 4th century BCE, as the main fortress in the Illyrian state where Queen Teuta took refuge during the Illyrian Wars. Five mosaics are the most valuable remains of that period – not only for Risan but also for Montenegro.