Police are investigating after a fire gutted two buildings at Ulladulla Harbour early Sunday morning.
Emergency services were called to the harbour just before 4am, following reports of a fire.
Police from Shoalhaven Local Area Command attended and found the Ulladulla Marine Rescue and Gondwana Coast Fossil Walk buildings alight.
NSW Fire & Rescue officers were able to extinguish the fire but both buildings were destroyed.
A crime scene has been established and police are treating the fire as suspicious.
An investigation into the cause of the fire is underway.
Detectives are appealing for anyone who might be able to assist with inquiries to contact Shoalhaven Police or Crime Stoppers on 1800 333 000.