The old city core of Slovenj Gradec has preserved its original outline, which today makes it an important monument of city planning. In Middle Ages, a wall was built around the city, which can still be noticed in Meškova, Ozka and Cankarjeva Street. The renovated Rotenturn manor was also built from the former Schulthauzinger tower. Of special interest are the former City Hall housing the Koroška Art Gallery and the Koroška Regional Museum, the Church of Sv. Elizabeta from 1251, the birth house of composer Hugo Wolf, Rotenturn Manor and the Church of Holy Spirit. 

The parish church, consecrated in 1251 to St. Elizabeth, stands in the centre of the town core of Slovenj Gradec, on the axis of the main town transversal and market street. Its foundation was a Romanesque nave that was Gothicised around 1400. The unified nave was vaulted in the 17th century and the long choir was vaulted in late Gothic style around 1500. Joseph's Chapel and the Cross Chapel were added on the south side in Baroque. Several late Gothic tombstones are built in the inner walls of the nave. 
In the church there are extremely rich, well maintained Baroque fittings displayed in an interesting way. The main altar was made by Janez Jakob Schoy, and the painting of St. Elizabeth is the work of the local master Franc Mihael Strauss. The side altars were designed in the second half of the 18th century by Jakob Jurij Mersi. The pulpit, which has extremely luxurious figural ornamentation, is his work as well (1763). The paintings in the side altars were painted by Janez Andrej Strauss and Mihael Skobl. 

The Church of the Holy Spirit stands right by the parish church of St. Elizabeth, in the centre of the town core of Slovenj Gradec. It was built in 1428 as a hospital chapel, connected with the town's almshouse. It is a one-nave building, concluded with slate saddle roof with a slender roof tower. Before the end of the 15th century, the entrance to the church from the town side was made (the nave was reconstructed in the years 1490-1495). For that purpose, a portal with the date 1494 was set on the west wall. The presbytery was reconstructed already in 1447. 
The interior in the nave is net and rib vaulted and has a long choir that takes up two star-shaped sections of the vaulting and the five-eighths ending. The church is a fine example of Gothic architecture, with Baroque furnishing. In the middle of the 15th century, the Bavarian fresco painter Andreas of Otting painted the entire north wall of the presbytery. This fresco is of great importance and attracts many tourists. It shows 27 scenes from Passion. At the edge of the triumphal arch wall there is also an added portrait of donators and a correlating inscription.The painting in the Florian altar is the work of Mihael Skobel (1633), and the main altar was designed by Jakob Jurij Mersi in the second half of the 18th century. Janez Andrej Strauss painted the image of the Pentecost in 1777. In front of the church, a monument in honour of the writer and priest Franc Ksaver Meško, sculpted by Rade Nikolić, was set up in 1994. 

The church is located on the edge of Legen’s terrace, above Šmartno. Fundamentally, it is a late Romanesque church from the 13th century; however, it was partly demolished in the 17th century, therefore, it does not show its true age nowadays. With its glass floor it reveals early medieval remains from the 9th century. 

The church of St. Pancras originates from the middle of the 13th century and it is unique in its architecture and origin in Europe. Therefore, it is considered one of the most important monuments in Slovenia. The church belfry is separated from the church and is the only remain of the former castle. The walls on the ground floor are 3 metres thick. 

The partisan hospital was named after a partisan surgeon named dr. Ivan Kopač – Pauček (1916 – 1988). He participated in the march of the 14th division from Lower Carniola through Croatia to Styria. He built 6 small wooden hospitals near Slovenj Gradec with the help of the patriotic local residents in the period between April 1944 and the end of the war. More than 300 wounded partisans were treated in these hospitals, together with numerous allied soldiers. Despite strong posts in the valley and numerous investigations of the field, the occupying army was unable to track down the hospital. 
Preserved remains the hospital with the secret name Trška gora na Legnu, located 10 kilometres from Slovenj Gradec. It is a cultural monument of significant importance for our country. 

The castle originates back to the beginning of the 14th century and it is a gothic castle. It is located on a picturesque ridge and due to its inaccessible location; the castle ruins have been preserved. Individual details have been preserved in their original form, since the castle burnt down and was abandoned already in the 17th century. 

Brothers Henrik, Bertold and Friderik Hebenstreit lost the castle in the middle of the 14th century and moved to Court Gojka near Slovenske Konjice. The Aquilea Patriarchate gave Henrik Vitanjski the castle and its nobility. After 1420 the castle was owned by the Habsburgs and also by other owners later on. 

Puščavnikova pot trail is also interesting for hikers. The trail goes past mighty trees and it offers recreation, education as well as relaxation. 

Rotenturn Manor stands on the edge of the old city core of Slovenj Gradec. This picturesque manor with its arcades and beautiful Baroque portal grew through many reconstructions from an original defence tower first mentioned in the 15th century and from part of town walls. The exemplary renovations of recent years have given it warmth and feeling of domesticity without depriving it of any of the beauty impressed on it mainly by the last major reconstruction in the 18th century. 

Rotenturn is still closely linked to the life of the town. Today it houses the offices of the Municipality of Slovenj Gradec and the mayor. The atrium of the manor has also become the central entertainment venue of Slovenj Gradec. Along with its rich cultural program, the Slovenj Gradec Summer Festival provides plenty of entertainment and merriment, attracting visitors from near and far. 

At the beginning of the idyllic valley above the Kaštel gorge, you will find the Plešivški mill. The first owner of the Plešivški mill about 500 years ago was count Plešivčnik. In this mill, the count and nearby farmers who had their own grain, used to mill. The mill operated until 1958, but then it could not be used any more as it was too worn. In 2005, foresters restored the lake then they restored the walls, which were nearly levelled to the ground, and subsequently the mill was restored to its original design and on 30 August 2008, the mill was again driven by water after such a long time. Besides the mill, there is an avenue of horse chestnut trees, and at an altitude of 860m, it is certainly unique in Slovenia. 

The Mislinjska valley, is a territory rich with rivers and streams, and boasts a rich tradition of mills. Even before WWII, there were operating about 250 water-powered facilities (mills, saws, oil mills, blacksmiths, and power plants). The buildings were slowly decaying, and many of them left no traces. Only the elderly still remember the old mills and saws, and fields of buckwheat, rye, wheat and corn. Today, milling crafts in our town are almost forgotten; however, when we visit the Herčeva saw and mill, we can almost hear the miller milling and singing an old miller song. In addition to grinding wheat and operating the saw, organizers present the old farm work of husking the corn every year at the Herčeva saw and mill, which has become quite a tradition. 

The Marovšek (or Čas) hayrack in Turiška vas is a unique feature in the area of Slovenia and even in Europe, since it is an architectural masterpiece. The floor plan of the double, cross-shaped hayrack forms a Greek cross. It is made entirely of timber. Some experts believe there might be only three further hayracks of the same type in the world.