Opatija
- Comprehensive guide to one of the first tourism centers on the Adriatic. History, sights, culture, gastronomy, excursions and events.
- http://www.opatija-tourism.hr/Home.aspx?PageID=1&gohome=true

Opatija.net
- City guide for tourist with information about events, sights, accommodation, restaurants, bars and photo gallery.
- http://www.opatija.net