Best places to visit in Alba Iulia

Alba Iulia (Romanian pronunciation: [ˌalba ˈjuli.a]; German: Karlsburg or Carlsburg, formerly Weißenburg, Hungarian: Gyulafehérvár, Latin: Apulum, Ottoman Turkish: Erdel Belgradı or Belgrad-ı Erdel) is the seat of Alba County in the west-central part of Romania.
It's 03:21 right now , with clear sky and the temperature of 6.06°C (42.908°F) in Alba Iulia.