The castle served as a residence for the Counts and later The Princes of Celje during the 14th and 15th century. It was separated from the town settlement by battlements and a defence ditch. After the extinction of the princes of Celje in the 15th century, the court was used as an office of the Habsburg caretakers and was transformed into a barracks in the 18th century. The building we know today has undergone many radical changes, most of them during the reign of Empress Marija Terezija.

The Old County Building was constructed between 1580 and 1603 on the site where the southeastern battlements and outbuildings used to stand. The beautiful archways were added to the northern side of the building in the beginning of the 17th century. The municipality bought the building in 1869, which has been used for many different purposes since then. The famous Celje Ceiling was discovered during reconstruction in the 1930’s and last of all, the building became the home of the Celje regional museum after The Second World War.  

A 100 years old building designed by a Czech architect Vladimir Hrasky dominates the square Trg Celjskih knezov. It was a cultural and social centre for the Slovenian population in Celje back in the times of Old Austria and is nowadays a residence of the municipality of Celje and some state offices. The north corner of the building is home to The Gallery of drawing arts, one of many galleries in Celje

The former “German house” is the most impressive building in Krekov trg. Built in neogothic style between the years 1905-06, according to the designs of a wienese architect Peter Paul Brang, it was erected as a counterweight to the National Hall by the German population of Celje. It was the social centre of the German townspeople until the fall of Old Austria. The building was renamed into The Celje Hall after the First World War.

The northwestern defence tower, originally part of the town ramparts is a part of the Slovene national Theatre, which was built in 1885. The tower once used as a torture chamber had hosted travelling families of actors since 1825. This very same tower had another important historical role. In 1849 the first play in the native, Slovene language was performed here: A comedy, called Županova Micka, written by Anton Tomaž Linhart.

St. Mary’s shrine is standing on the spot where the shaming pillar, meant for punishing criminals and petty delinquents, used to be. The statue of Virgin Mary is positioned on a high pillar, which has a triangular base. St. Rocus (the patron against the plague) and St. Florian (the patron against fire) were the original statues, built at the foundation of the pillar. The statue of St. Joseph (the patron of families and workers) was added later, in the 19 Th century. The sides of the elevated base hold inscriptions from the 19th century, written in German, Slovene and Latin. The Main Square (Glavni trg), where the shrine is, had been a central fair- and marketplace up until the end of The Second World War.

The Old Christian baptistery, an octagonal christening reservoir constructed in the end of the 4th or 5th century, can be found in Gubičeva ulica. Two stairs lead to each of the opposite sides of the slightly elevated christening reservoir. There was probably a large church complex located in this part of town and the baptistery is assumed to have been a part of it.

There is a representation of the famous Calvary Hill erected on St. Joseph’s Hill (Jožefov hrib). It consists of four chapels (originally, there were five, but one is missing) and the Golgotha group of statues on the top of the hill. The statues were made by a sculptor Mihael Pogačnik from Slovenske Konjice (a town on way to Maribor), together with the chapels in 1717. A sculptor by the name of Berneker renovated the sculptures approximately two hundred years later and also made a sculpture of Mary Magdalene or. Mary of Magdala (Marija Magdalena).

It is the most important building from the inter-war period, built between 1928 and 1929, following the design of a famous Slovene architect Jože Plečnik. The wooden cross at the top of the building was taken down after the Second World War by the new regime and replaced with a metal one in 1991, after the war for independence.