Nama Buddha lies about 40 km from Kathmandu and is a Buddhist pilgrim site. Thrangu Tashi Yangtse Monastery is home to around 250 young monks, who will welcome you to join in their morning or evening prayers. The monastery is open to the general public on Saturdays. If you wish to visit at any other time, please contact them directly.
Taxi: Will be quite expensive if you are going one way since he may not get anyone coming back down from the monastery. Maybe around $40.
Private car: Might be more costs effective at around the same price as a taxi. Your hotel or any travel agent can arrange this for you.
Public bus: From the Old Bus Park take a bus to Dhulikhel then hike to Nama Buddha.