ancient staircase with iron grid, colosseum inside in details, rome, italy

wall iron architecture wood arch window facade brick house door building column brickwork temple ruins chapel art ancient staircase grid colosseum inside details rome italy largest standing amphitheatre world built travertine limestone volcanic rock brick-faced concrete used gladiatorial contests animal hunts executions re-enactments famous battles dramas based roman mythology sea eliptical ruined sunny day shadows