Quelle: https://upload.wikimedia.org/wikipedia/commons/5/58/Thessaloniki_White_Tower_and_promanade.png

By Zweifüssler [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons

1. Sat 18.03.2017 day of arrival
   Seminar from Sun 19.03. to Fri  24.03.2017
   Sat 25.03.2017 day of departure
   
   
2. Sat 25.03.2017 day of arrival
   Seminar from Sun 26.03. to Fri 31.03.2017 
   Sat 01.04.2017 day of departure

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3. Sat 14.10.2017 day of arrival
   Seminar from Sun 15.10. to Fri  20.10.2017
   Sat 21.10.2017 day of departure
   
   
4. Sat 21.10.2017 day of arrival
   Seminar from Sun 22.10. to Fri 27.10.2017 
   Sat 28.10.2017 day of departure