The open air summer amphitheatre of the Ko … The open air summer amphitheatre of the Kosovel Culture House Sežana. Though the construction of this cultural centre started in 1979, the place first opened its doors in 1991. It was initially designed by a group of five architects – Vojteh Ravnikar, Marko Dekleva, Matjaž Garzarolli, Egon Vatovec and Mladen Marčina.rzarolli, Egon Vatovec and Mladen Marčina. +