I can also suggest a trip to South Macedonia you. For example, the mountain Kozuv, Thermal Negosrki Banji, the wine region of Demir Kapija and Dojran lake.
http://www.skikozuf.com.mk/index.php?lang=en
http://www.negorskibanji.com.mk/index_ang.html
http://www.dojran-info.com/index.php?lang=en
http://www.popovakula.com.mk/
thanks a lot, Dojran lake is must see but I didn't know about Thermal Negosrki Banji