The Udayagiri Fort in Tamil Nadu lies very close to the town of Thiruvattar and is about 14 km from the town of Nagarcoil. The fort cannot be missed since it is on the Thiruvanthapuram- Nagarcoil National Highway.
The Fort was built in the 17th century, but the King Marthanda Varma of Travancore had the fort re-built in the 18th century. The main reason for building the fort was to have a place for casting guns. For this purpose, a foundry was especially built. The foundry still survives to this day, and captures the interest of many tourists. The fort has housed many famous prisoners including Tipu Sultan who was imprisoned in the fort for a brief time.
The effects of time and nature can be seen upon the Fort, but regardless, the structure stands tall and majestic and is an evidence of the rich and brave history of Thiruvattar.