Babalagama Purana Naga Len Viharaya" was founded in the late 15th century. In 2007 October 3rd, from the  arrival of most venerable Dellathagare Nandasara Thero the sacred location has turned in to a meditation Centre well known as "Dassana Buddhist Centre" which teaches Mindfulness meditation from the Theravada tradition for the spiritual development of people of all faiths.

Dassana Buddhist Society was formed in 2015 by a group of buddhists with the vision of conducting systematically, the residential meditation programmes already being conducted at the Nagalen Purana Vihara of Babalagama, Galagedara since the year 2007 for 7 long years, uninterruptedly and undisturbed for an everlasting period from January 2015, and through which to educated people ,of the Path for the purification of mind, the message of Theravada Buddhism; to inculcate the practice of Sathi Pattana Meditation.