Fortress of the XI century, it was built by muslims. It is located on top of a rock in the higher part of the area of the town. During the Middle and Modern ages, the castle was very important due to its strategic situation. The 1644 and 1748 earthquakes and the bomb attack in 1708 in the Succession War were responsible for its destruction.

Centre Charlemagne is a modern city museum in the heart of the historical centre. Here, the history of city comes to life, explaining how Aachen became the residence of the Carolingian rule and the medieval city of coronations. Apart from that, the Centre Charlemagne is the starting point of the Route Charlemagne that connects all the important places in the city.

Aachen Cathedral, one of Europe's oldest, was commissioned by Emperor Charlemagne. He has been interred here since 814, and his legendary throne has not been moved in centuries. The Palatine Chapel has been a significant site for the coronation of German royalty and remains a key pilgrimage church. Its rich cultural-historical architecture makes it an essential sight for every visitor to Aachen.

Åsnen was made a national park in March 2018, which means that the nature in the surroundings is unique and of international interest. The national park is about 1,868 hectares large, and 75% of the area is water. The main entrance is situated by the bridge Sunnabron near the narrow that leads to the largest island in Åsnen, Sirkön. Hiking paths leads to Bjurkärr. Bjurkärr has one of Sweden’s most valuable broad-leaved deciduous forests, since it is very rich in species. The bird life is rich and you can find unusual insects, moss and lichen here. The other entrance to the national park is situated by the left shore of Åsnen and near the mountain Trollberget. Here you can find leaflets about the national park and also both broad-leaved deciduous trees and conifer trees such as pine and fir trees. Additionally, there is a shore by the lake and wetland forest, all in the same small area. Some places in the national park have toilets, fire places and resting places. Some have paths marked with different colours and a wooden deck near the lake where you can unpack your basket with Swedish fika and just enjoy the view of Åsnen, with all its lakes and water.