Surabaya is the capital of the province of East Java (East Java) in Indonesia. It is located on the northeastern tip of Indonesia's main island of Java, at the mouth of the river Mas. To Jakarta Surabaya is the second largest city in Indonesia. The port city has large shipyards and numerous specialized schools in the area of ​​nautical education. She is also the basis of the Indonesian navy. Main export products are sugar, tobacco and coffee. In this large and dynamic city's many different ethnic groups dominate the picture of everyday life. Although the Javanese are dominant, live in Surabaya many Madurese, Tionghoa Chinese and Arabs. In Surabaya, there is a Jewish community, which operates the only synagogue in Indonesia since the early 20th century.