The Krishnapuram Palace is a palace and museum located in Kayamkulam near Alappuzha in Alappuzha district, Kerala in southwestern India. It was built in the 18th century by Anizham Thirunal Marthanda Varma (1729–1758 AD), the Travancore kingdom. It is built in the architectural style of Kerala with gabled roof, narrow corridor and dormer windows, near the Krishnaswamy Temple at Krishnapuram.
The palace is maintained by the Kerala State Department of Archaeology and contains exhibits that belonged to the Palace and its former occupant, the Travancore Maharaja Marthanda Varma. It is also famous for a large pond within the palace complex.It is also said that an underground escape route runs from the bottom of the pond as a possible escape route from enemies.