Adam Bota artist contemporary arts paintings oil on canvas vienna austria los angeles california painter modern art contemporary art figurative painting exhibition collectable art celebrity portrait still life landscape impressionist expressionist figurative art progressive art investment artwork contemporary art scene top artist galerie Engler berlin galerie Raday Budapest hungary Kulturplattform Tivoli berlin podium wien ragnarhof wien galerie H17 wien medea linz continental gallery los angeles arts district phantom galleries los angeles group show with Clive Barker Robert Reynolds curated by Bert Green Lilli Muller edgar varella fine arts