The Lumbini Museum, located in the Cultural Zone, contains Mauryan and Kushana coins, religious manuscripts, terra-cotta fragments, and stone and metal sculptures. It also possesses an extensive collection of stamps from various countries depicting Lumbini and the Buddha.

Lumbini International Research Institute (LIRI), located opposite the Lumbini Museum, provides research facilities for the study of Buddhism and religion in general. Run jointly by the Lumbini Development Trust (LDT) and the Reiyukai of Japan, LIRI contains some 12,000 books on religion, philosophy, art and architecture.

Kapilvastu Museum is situated 27 km west of Lumbini in the village of Tilaurakot. The museum holds coins, pottery and toys dating between the seventh century BC and fourth century AD. The museum also has good collection of jwellery and other ornaments of that period.