instruction: Give me some ideas of activities to do in Romania
response: As of the activities that you can do in Romania, there is a plenty of selections such as:
  - Swim in the Black Sea, visiting resorts like Constanta, Mamaia, Eforie Nord, Costinesti, Jupiter or Vama Veche
  - You can go skiing in mountain resorts like Poiana Brasov, Azuga, Sureanu, Semenic, Cavnic, Arieseni or Ranca
  - Travel the water channels of the Danube Delta and stay in traditional villages that can only be reached by boats such as Sfantu Gheorghe or Sulina
  - Travel with the steam powered train Mocanita in the mountainous areas of Maramures
  - Visit historical cities like Bucharest, Timisoara, Cluj-Napoca, Iasi, Brasov, Sibiu, Sighisoara
  - Visit castles like Bran Castle, Peles Castle or Corvins Castle