7.7673°S, 110.4723°E.
Candi Kalasan is a Mahayana Buddhist temple in the Sleman Regency of central Java, Indonesia, built in 778 CE according to the Sanskrit Kalasan inscription — making it the oldest dated Buddhist temple in Java. The temple was constructed during the rule of the Sailendra dynasty and dedicated to the bodhisattva Tara. The structure is built of andesite stone faced with vajralepa, a hard polished plaster of unknown composition that gave the temple a brilliant white finish in its original state — fragments of the plaster still adhere to protected interior surfaces. The plan is cruciform on a square base, with four projecting porches and a high stepped pyramidal roof. The Kalasan inscription, recovered nearby in 1862, names the patron and the dedication, and the temple has been restored multiple times including a major Dutch reconstruction in 1927-29. The corner reliefs of celestial figures still preserve sharp carving detail.
Vajralepa-coated fragments remain visible in protected interior wall pockets.