The Krishnapuram Palace is located at Kayamkulam, 47 km from Alappuzha. The Palace is a rare example of the Kerala style of architecture; complete with narrow corridors, gabled roofs and dormer windows. The palace was once the residence of the rulers of Kayamkulam kingdom. The Krishnapuram palace is today a protected monument under the Archaeology department. At present the palace is an archaeological museum, with the most fascinating exhibit being the 49 sq meters Gajendra Moksham (the largest single band of mural painting so far discovered in Kerala).

The mural was placed at the entrance of the Krishnapuram palace from the pond to help the kings to worship the deity after their bath. Other attractions at the Krishnapuram palace are the beautifully landscaped garden in the palace compound with a variety of flora, typical of Kerala, and a newly constructed Buddha mandapam, where a recently recovered statue of the Buddha is housed. Other collections at the Krishnapuram palace museum include rare antique bronze sculptures and paintings.