Dun Fiadhairt is an Iron Age broch standing on a low, rocky knoll in the midst of moorland, on a peninsula which juts into the east side of Loch Dunvegan. The broch has an external diameter of 16.8 metres and an internal diameter of 9.6 metres. The main entrance is on the west side of the broch and the entrance passage is 3.7 metres long. The passage contains two opposing guard cells.
The interior of the broch contains a double cell in the side wall, and a 'guard cell' at the foot of the stairs. The rest of the inner wall is occupied by a ground level gallery. The door to this mural gallery goes right through the wall to form a small second entrance. It is not certain if this second entrance is part of the original structure, since other second entrances found in brochs elsewhere appear to be of later construction.
Dun Fiadhairt was excavated around 1892 by the Countess Vincent Baillet de Latour. Little information survives about these early excavations, and 20 years later she would excavate Dun Beag with more care. Finds included a quantity of pottery, and a large amount of 'iron refuse'. Stone finds included a rotary quern, a whetstone, a hammerstone, spindle whorls and a fragment of an armlet. Several glass beads were found of various colours, and in addition there were 59 amber beads in the form of short cylinders which presumably formed a necklace. There was also found a baked clay object, thought to be a Roman votive model of a bale of wool.References:
German crusaders known as the Livonian Brothers of the Sword began construction of the Cēsis castle (Wenden) near the hill fort in 1209. When the castle was enlarged and fortified, it served as the residence for the Order's Master from 1237 till 1561, with periodic interruptions. Its ruins are some of the most majestic castle ruins in the Baltic states. Once the most important castle of the Livonian Order, it was the official residence for the masters of the order.
In 1577, during the Livonian War, the garrison destroyed the castle to prevent it from falling into the control of Ivan the Terrible, who was decisively defeated in the Battle of Wenden (1578).
In 1598 it was incorporated into the Polish-Lithuanian Commonwealth and Wenden Voivodship was created here. In 1620 Wenden was conquered by Sweden. It was rebuilt afterwards, but was destroyed again in 1703 during the Great Northern War by the Russian army and left in a ruined state. Already from the end of the 16th century, the premises of the Order's castle were adjusted to the requirements of the Cēsis Castle estate. When in 1777 the Cēsis Castle estate was obtained by Count Carl Sievers, he had his new residence house built on the site of the eastern block of the castle, joining its end wall with the fortification tower.
Since 1949, the Cēsis History Museum has been located in this New Castle of the Cēsis Castle estate. The front yard of the New Castle is enclosed by a granary and a stable-coach house, which now houses the Exhibition Hall of the Museum. Beside the granary there is the oldest brewery in Latvia, Cēsu alus darītava, which was built in 1878 during the later Count Sievers' time, but its origins date back to the period of the Livonian Order. Further on, the Cēsis Castle park is situated, which was laid out in 1812. The park has the romantic characteristic of that time, with its winding footpaths, exotic plants, and the waters of the pond reflecting the castle's ruins. Nowadays also one of the towers is open for tourists.