Religious art

There are icons and frescos from catholic and russian orthodox churches where impossible contructions were used.

Fresco from The Big or Our Lady's Church in Breda (Netherlands)
Impossible triangle in church of Holy Trinity in Burrington (Devon)
Madonna and child (1025)
Russian orthodox icon "Last Judgement"
Frescos with impossible backgrounds, which were created by Eugeny Matko in Pokrovsky church in voronezh region (Russia)