st. petersburg, russia - march 15, 2015: military-historical museum of artillery, engineer and signal corps and a window in the

arch architecture arrows artillery away background brick bright city combat cornice crenellations day defense defensive embrasure europe exterior facade fortified fortress frame grid gun guns historical inspectio iron landscape loophole masonry massive metal military orange patterns red saramaccan seen slotold spikes stone texture thick tourism tower travel view wall wide window