Traquair House is claimed to be the oldest continually inhabited house in Scotland. Whilst not strictly a castle, it is built in the style of a fortified mansion. It pre-dates the Scottish Baronial style of architecture, and may have been one of the influences on this style. The estate contains the famous Traquair Brewery.
The house is built on the site of a hunting seat used by the Scottish kings from the 12th century, though no part of the present building can be dated with certainty before the 15th century. Alexander I was the first Scottish king to stay and hunt at Traquair.
Over the next two centuries Traquair's ownership changed often, at times coming under the control of the English, and at others, the Scottish throne. Traquair remained the family seat of the Earls of Traquair from 1491 for the next four centuries.
Traquair is a 50-room house mainly dating from teh 16th-19th centuries. There is a Roman Catholic chapel built in 1829, following the Catholic emancipation. The 18th-century library contains more than 3,000 volumes. Although three lairds made alterations to the house prior to the 17th century, Traquair has changed little, architecturally, since then.
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.