The capital area has lots of beautiful islands. Many of them are private but some are open to the public. One of them that it definitely worth a daytrip is Iso Vasikkasaari on the coast of Espoo. Several times a day a ferry leaves from Otaniemi, Haukilahti and Matinkylä to bring visitors to the island. For the timetable click here. Adults pay 5 € for a return ticket, children just 2 €. Especially on weekends and when the weather is good the ferries are normally full. So try to get on board before Matinkylä. Luckily the island is big enough to never give you the feeling of being overcrowded. There are nice smaller and bigger beaches and several idyllic places along the water and further inside on the island. On the South-Western side the sailing boats at the wooden pier give you the feeling of being somewhere at the Mediterranean Sea rather than in Finland. Closer to the harbor you find a cozy restaurant serving meat and fish dishes. You can of course also just enjoy a cold drink in the shade.