Entrance of Fort Frederick

Fort Fredrick (திருகோணமலை கோட்டை, ත්‍රිකුණාමලය බලකොටුව), also known as Trincomalee Fort or Fort of Triquillimale, is a fort built by the Portuguese at Trincomalee, Eastern Province, Sri Lanka, completed in 1624 CE, built on Swami Rock-Konamamalai from the debris of the world-famous ancient Hindu Koneswaram temple (Temple of a Thousand Pillars). The temple was destroyed by the Portuguese colonial Constantino de Sá de Noronha under Phillip III, occupier of the Jaffna kingdom and Malabar country on the island. On the Konamalai cape was also built a new village of Portuguese and Tamil people, 50 Portuguese soldiers and inside the fort, a church named after "Nossa Senhora de Guadalupe". The Fort of Triquillimale was dismantled and rebuilt by the Dutch in 1665, renamed Fort Fredrick.
Background
The fort in 1606

Several Hindu shrines in the Tamil country were destroyed during the occupation, particularly under Philip II, when Trincomalee became the scene of naval battles during Europe's Thirty Years' War. King Ethirimana Cinkam of the Jaffna kingdom had resisted a call by D. Jerónimo de Azevedo in 1612 to aid the latter in building a fortress in Trincomalee. The enterprise was abandoned. With the defeat of King Cankili II, all of the territory of the kingdom of Jaffna, comprising Trincomalee and Batticaloa, was assigned to the "spiritual cures of the Franciscans. " This decision was taken by the bishop of Cochin, fray Dom Sebastião de S. Pedro. By the end of 1619, a small Danish fleet had arrived at Trincomalee; in May 1620, the Danes occupied Koneswaram temple and began works for the fortification of the peninsula before being defeated

Old fortress ruins
It is now a military land.
A place where entry is prohibited
many.

This is one and only entrance to the famous Fort Frederick constructed by Portugese in 1675. It is difficult for larger vehicles like buses to enter through the Fort entrance, hence if you are planning to go inside the Fort by a vehicle, use a smaller one.

Reminds colonial era. Can't cross 2 vehicles at once so be mindful to follow the traffic light

A considerable population of spotted deer (Axis axis ceyloniensis) can be found roaming freely in the fort premises which is a unique site for Trincomalee.

Managed by Srilanka Army. Gokanna temple and Koneswaram kovil located in this ancient fort.

Nice place. Good to visit in the morning, especially when going for a walk. You can enjoy the scenary around. There are some deer you can see on the way. The beach view with boats floating on it is beautiful. Best place to go during sun rise. Inside you have military offices etc. The road inside leads you to koneshwaram temple. People are friendly in the area. Lot people in trincomalee come here for walks and exercise purposes.