IWS Slovenija vabi na 4. mednarodni bienale akvarela v Vipavski dolini.
Kindly invited to the IV. international watercolour biennial in Vipava valley by IWS Slovenia.

Navodila v slovenščini: CASTRA 2021 – slo

English instructions: CASTRA 2021 – eng

Istruzioni in italiano: CASTRA 2021 – ita

Upute na hrvatskom: CASTRA 2021 – hr

Instrucciones en español: CASTRA 2021 – esp

Vljudno vabljeni! / Kindly invited!