green double iron doors with arched top, ornate decorations, two horizontal security bars, and a padlock

door iron metal double arched fortress castle medieval ancient historic heavy entrance secure architecture heritage stronghold old ornate craftsmanship black aged durable armored reinforced rustic massive knight defensive battlement mysterious peephole thick gate fortification antique weathered gothic security historicbuilding agedmetal timeless locked war preservation archway stone medievalhistory fortressgate ironwork secrecy