Siri Thisarana Dharmayathanaya is a Buddhist temple located in Piliyandala, a suburb of Colombo, the capital city of Sri Lanka. 

The temple is known for its peaceful and serene environment, making it a popular destination for meditation and spiritual practices. 

The temple's architecture is a blend of traditional Sri Lankan and modern styles, featuring a pagoda, a Bodhi tree, a shrine room, and meditation halls. The temple also houses a library with a vast collection of Buddhist literature in several languages.

Siri Thisarana Dharmayathanaya conducts various religious and cultural activities throughout the year, including Dhamma sermons, meditation retreats, and religious festivals. 

The temple has a strong focus on education, and it offers classes on Buddhism, meditation, and Sinhala language for both children and adults. 

The temple also engages in various social welfare activities, including charity work, blood donation campaigns, and disaster relief efforts.

The temple's main objective is to propagate the teachings of the Buddha and promote peace, harmony, and well-being in the community. It is a significant religious and cultural institution in the region and attracts devotees and visitors from all over the world.