Lillö Castle was built in in the 14th century among the natural defences offered by the inaccessible marshlands and the River Helge å. The first known owner was Åke Axelsson (Tott) in 1343. The castle belonged to Tott, Trolle and Huitfeldt families until it was destroyed in 1658–59. Today, displays inside the castle based on the finds made during various archaeological digs reflect life here in days gone by. Display panels in the courtyard provide information on the castle and its surroundings. A key is available from the Naturum Vattenriket visitor centre to gain admission to the castle.
References:Herceg Novi was founded (on a former small fishing village, existing since Roman Empire times) as a fortress in 1382 by first Bosnian King Stjepan Tvrtko I and was called Sveti Stefan or Castelnuovo. The Turks conquered Herceg Novi in 1482, and ruled for 200 years, until 1687. However, there was a short pause between 1538 and 1539 when it was held by the Spaniards before they were defeated in the Siege of Castelnuovo. Turkey ruled again until 1687, from then until 1797, the town was ruled by the Venetian Republic.
The Herceg Novi old town is amazing. It is on a fairly steep hill that leads all the way down to the sea. Wandering through the small stairways to the various plazas and fortresses is a many hour adventure.