12th century endemic building called Watadage surrounding pagoda in Sri Lanka at UNESCO world heritage site

12th century buddha buddha death sri lanka ceylon polonnaruwa gal viharaya history art worship ancient construction cave monument world buddhism gal vihara gautama unesco world heritage site archaeological carving figure image king palace relic rock ruin sacred sculpture shrine statue stone king parakramabahu pulathisipura meditation sitting statue brick roof brick temple pagoda sthupaya watadage endamic proud history historical building round building religious rock tile