Additionally there are the excavated remains of Buddhist viharas (monasteries) of the 3rd century BC to the 5th century AD and the remains of Buddhist stupas (memorial shrines) from the 3rd century BC to the 15th century AD. The site is now being developed as a Buddhist pilgrimage centre, where the archaeological remains associated with the birth of the Lord Buddha form a central feature. Criterion (iii): As the birthplace of the Lord Buddha, testified by the inscription on the Asoka pillar, the sacred area in Lumbini is one of the most holy and significant places for one of the world’s great religions. The integrity of Lumbini has been achieved by means of preserving the archaeological remains within the property boundary that give the property its Outstanding Universal Value. The site management is carried out by the Lumbini Development Trust, an autonomous and non-profit making organization.