Galle is a city situated on the southwestern tip of Sri Lanka, 119 km from Colombo. Galle is the capital city of Southern Province of Sri Lanka and it lies in Galle District. Galle was known as Gimhathiththa (although IbnBatuta in the 14th century refers to it as Qali[verification needed]) before the arrival of the Portuguese in the 16th century, when it was the main port on the island. Galle reached the height of its development in the 18th century, during the Dutch colonial period. The major river is Gin River (Gin Ganga) which starts from Gongala Kanda and passing villages such as Neluwa, Nagoda, Baddegama, Thelikada, and Wakwella, reaches the sea at Ginthota. In Wakwella over the river there is Wakwella Bridge, which is the longest bridge in Sri Lanka.