Go cycling, mountainbiking, horse-riding, go-karting or for a round or two of mini-golf.
Head for one of the many child-friendly beaches, long and sandy with shallow water – try Lampi or the beaches of the southern coast with anglicised names such as Banana, Paradise or Sunny. But do your research – some beaches are popular with Scandinavian nudists.
Get splash-tastic at one of the island's waterparks: Aquatic and Lido.
Discover the atmospheric ruins of Asklepion, birthplace of Hippocrates and home to an ancient sanatorium founded in 444BC.
Visit Kos Town, a mad mix of beach and party resort and ancient ruins, with beautiful street mosaics and elegant Roman columns interspersed with nightclubs.