Much of Skiathos' beauty can't be fully appreciated on terra firma. Thankfully, round-the-island boat cruises offer sightseeing opportunities from a different perspective. See the picture-perfect Lalária Beach with its famous Trýpia Pétra rock-arch, and the island's original pirate-resistant settlement Kástro, which was fortified during the 16th century.
Strolling past the gardened houses, through the little plazas of Tris Ierárhes and Ágia Triáda, and into the churches of Skiathos Town will utterly charm you. Duck into the local shops and museums, like the Galerie Varsakis antique shop, which can be found on the Tris Ierárhes plaza, and discover this self-styled museum of textiles and Greek rural impedimenta.
The waters surrounding Skiathos aren't just for cooling off while sunbathing, scuba diving is really popular here because there are more than 300 native species of fish, including dolphins, swordfish, and tuna. If you're a bit of a marine buff, and want to experience something unique, go diving at night, and see the underwater world truly come alive.
Skiathos has a buzzing nightlife, primarily located by the old port, you'll find a mixture of laid-back bars where you can enjoy a cocktail, and hip clubs where you can dance the night away. If you're looking for more of a chilled out night, then head to the Attikon outdoor cinema on Papadiamándi, which has regular screenings of Mamma Mia!
Koukounariés is the most famous, and arguably the best beach in Skiathos. This is chiefly because it's a protected natural reserve with no permanent developments at sea level. The crescent-shaped Banana Beach, which boasts fine golden sand and crystal-clear waters, is also worthy of your sun worshipping pursuits.