The Koyikkal Palace situated in Nedumangadu, Thiruvananthapuram was built in the 16th century for Umayamma Rani (the queen of Venad between 1677 and 1684) of the Venad royal family. 

Currently, the palace houses a Folklore Museum and a Numismatics Museum. The palace showcases Kerala style of architecture and is curved in the shape of a boat and has two floors

The Folklore Museum was set up in 1992 and boasts of musical instruments, household utensils and models of folk arts among others. Another peculiar exhibit is a musical instrument called the Chandravalayam, which can be described as one of the most unique musical instruments used in Kerala at that time. 

The Numismatics Museum has some of the oldest coins of Kerala such as Ottaputhen, Erattaputhen and KaliyugarayanPanam.