Sammallahdenmäki is a Bronze age burial site including 36 granite burial cairns dating back more than 3000 years, from 1500 to 500 BC. Sammallahdenmäki is an exceptionally valuable example of Finland’s Bronze Age culture because it presents the ancient monuments in a well-preserved natural milieu. It’s designated as the UNESCO World Heritage Site in 1999.
Two of the most spectacular cairns are the quadrangular "Chuch Floor" and the dike-like "Long Ruin of Huilu". A typical feature of the Sammallahdenmäki cairns are the stone cists, boxlike structures formed by stone flags standing on edge and forming end and side walls or only one or the other. The cist may have originally contained a body in a wooden coffin, or the dead person may have been wrapped in animal skins. On the other hand, the cist may also have served as a receptacle for the ashes of a cremation burial. Remains of cists are still visible in some of the unexcavated cairns as well as in one cairn reconstructed after investigations.
Direction signs guide the visitor to Sammallahdenmäki from Highway 12 (Rauma–Huittinen). At the township of Lappi, the route turns north along Road 2070. After ca. 3.5 km the route turns left along a side road marked by a direction sign. The route ends at an information sign.
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.