The Princes' Islands, an archipelago of nine islands in the Sea of Marmara, were places of exile for Byzantine princes. Today, during the summer months, Istanbul's wealthy, escape to their cool sea breezes, and elegant l9th century houses. Büyükada is the largest of the islands. Here you can enjoy a ride in a horse-drawn phaeton (carriage) among the pine trees, or relax on a beach in one of the numerous coves that ring the island. The other popular islands are Kinali, Sedef, Burgaz and Heybeliada. Regular ferry boats connect the islands with both the European and Asian shores. A faster sea bus service operates from Kabatas in the summer.
On the European side of the Black Sea coast, 25 km from the outskirts of Istanbul, Kilyos's long, broad sandy beaches draw crowds of Istanbul residents in the summer months.
The Belgrad Forest, inland from the Black Sea on the European side, is the largest forest around Istanbul . On weekends, Istanbulites drive out to its shade for family picnics and barbecues.
On the Asian side, Polonezköy, 25 km from Istanbul, was founded in the l9th century by Polish immigrants. Istanbul residents come to its pastoral landscape for walks, horseback riding and to enjoy the traditional Polish food served by descendants of the original settlers. The Bayramoglu-Darica Bird's Paradise and Botanic Park, 38 km from Istanbul, is a unique rest area; many species of birds and plants from all over the world can be seen in this huge park, which also has restaurants and a promenade for pedestrians.