Viale dei Romagnoli, 717
www.ostiaantica.beniculturali.it
Every day except Monday. Last Sunday of October-15th February 8:30-16:30. 16th February-15th March 8:30-17:00. 16th March-last Saturday of March 8:30-17:30. Last Sunday of March-31st August 8:30-19:15. 1st September-30th September 8:30-19:00. 1st October-last Sunday of October 8:30-18:30. The ticket office closes one hour before. Closed on December 25th, January 1st, May 1st. Admission fee.