By far the most spectacular Buddhist monuments, discovered in regular excavation is the gigantic temple and monastery at Paharpur in the Noagoan district. Architecturally and historically Paharpur Vihara is a treasured heritage of the world. It has been identified from a set of inscribed clay seals, as the reputed Somapura Vihara, of the great Pala emperor Dharmapala. It is the single largest Vihara south of the Himalayas. This immense quadrangular monastery with 177 monastic cells enclosing the courtyard, its elaborate northern gateway and numerous votive stupas, minor chapels and extensive ancillary buildings within the 22 acre courtyard, is dominated by a lofty pyramidal temple in the centre. A site museum houses the representative collections of objects recovered from the area. The excavated finds have also been preserved at the Varendra Research Museum at Rajshahi.