page_title: Polygonal masonry
section_title: Russia
hierarchical_section_title: Polygonal masonry / Russia
caption_attribution_description: English: Fort Alexander I, one of the fortresses in or adjacent to Kronstadt, Saint Petersburg, Russia.
context_page_description: Polygonal masonry is a technique of stone wall construction. True polygonal masonry is a technique wherein the visible surfaces of the stones are dressed with straight sides or joints, giving the block the appearance of a polygon.
  This technique is found throughout the world and sometimes corresponds to the less technical category of Cyclopean masonry.
context_section_description: Fort Alexander (Saint Petersburg)
  Königsberg Castle
caption: Fort Alexander I
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