ruins of the ancient vaishali where buddha used to stay during the rainy seasons. kolhua ,vaishali, bihar

old buddhism asia ancient bihar stupa architecture buddha praying india pilgrimage monument statue indian pillar vaishali buddhist religious kutagarasala temple asoka sacred landmark ananda vihara spiritual religion lion patna history ashoka rock ashokan ruin stone travel sky tourism meditation lumbini monk gaya column blue archeology landscape famous historic antique material