assenov's fortress

alley ancient architecture assen balkans bansko bistrica borovec brick building built bulgaria castle cathedral christianity church city classical culture czar destinations east europe european exterior famous fort fortified front high history house idyllic landmark landscape lane majestic mansion maritza medieval monastery mountain narrow old orthodox outdoors overcast place plovdiv prominence protection religion ridge rock scene scenics spire spirituality steeple stone stronghold style top tourism tourist tower traditional travel view wall