The Cathedral of Ratzeburg, one of the oldest brick churches of Northern Germany, is a basilica with three naves. Its arches are supported by pillars and it is built in the form of a cross with a choir quadrangle and a halfround apse. The last restoration (completed in 1966) returned the cathedral to its late Romanesque conception, so you can discover most of the unity and integrity of its original design.
The cathedral was founded in 1154, when Henry the Lion, Duke of Saxony, and Hartwich I, Archbishop of Hamburg, refounded the episcopal seat of Ratzeburg, and Evermodus became its first bishop. The cathedral was restored, and additions were made to it in the 15th century.
The Cloister, on the north side of the Cathedral, was begun shortly after the completion of the Cathedral (ca. 1220). The cloistered courtyard is open for the public.
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.