grayscale background of raw natural stone on the medieval facade of khor virap monastery in armenia

abstract ancient architect architecture armenia background basalt black border brick brown built castle cement cladding clay cobblestone color concrete construction dirty effect exterior facade granite grayscale house khor made marble masonry material medieval monastery mottled multicolored natural nature obsidian old outdated outdoor pattern paving piece raw rough solid stone structure surface texture tile tuff uneven virap wall wallpaper weathering white