Arippu Fort (Sinhalese: අරිප්පු බලකොටුව; Tamil: அரிப்புக் கோட்டை, also known as Allirani fort; Tamil: அல்லிராணிக் கோட்டை) was built by the Portuguese and was handed over to the Dutch in 1658.[2] The small bastion fort is located in Arippu, which is 16 km (9.9 mi) away from Mannar Island. The fort is nearly square in shape, with two bastions.