The Hill Palace is Kerala's first heritage museum located at Thripunithura in Ernakulam district. It has a huge collection of the former Maharaja of Kochi. At present, this official residence of the royal family has become one of the state's largest archaeological museums. Built in the year 1865, there are 49 buildings in the complex which are designed in the Kerala's architectural style. Spread over 52 acres of land, the complex is beautifully landscaped and houses a deer park and horse riding facilities. The complex of museum is a home to various rare species of medical plants. At present, this museum is protected by the Kerala State Archaeology Department.
https://www.tourmyindia.com/states/kerala/hill-palace-tripunithura-ernakulam.html