The ancient Kiri Vehera built by King Mahasena is a sacred place in Kataragama. The stupa holds the Kesha Datun Wahanse (a lock of hair of Lord Buddha). Apart from that, the temple enshrines the golden seat and the magul kaduwa (sword) that Lord Buddha used to cut his hair in the great repudiation.
King Mahasena protected the stupa which held the Kesha Datun Wahanse (a lock of hair of Lord Buddha) while he was in reign. Due to his holy act, after his death he was reborn as a god to protect the stupa and the surroundings.
The statue of King Mahasena is situated near the stupa.