Neva Bay
Kotlin () is a Russian island, located near the head of the Gulf of Finland, west of Saint Petersburg in the Baltic Sea. Kotlin separates the Neva Bay from the rest of the gulf. The fortified city of Kronstadt is located on the island and forms part of a World Heritage Site that is "Saint Petersburg and Related Groups of Monuments". The island serves as a gateway to Saint Petersburg and as such has been the site of several military engagements. The Kotlin programming language is named for the island, much as the Java programming language shares its name with an Indonesian island.