Koyikkal Palace is located in Nedumangad, a town in Thiruvananthapuram district, Kerala. It was built in the 17th century for Umayamma Rani of the Royal Family of Travancore. The palace now houses a Folklore Museum and a Numismatics Museum. Kollam, Kochi, and Trivandrum (Thiruvananthapuram city) are incorrect - Nedumangad is a town within the district, not the district capital itself.