Rifnik the 568m high peak, which is located south of Šentjurja in Celje. The summit, which is known for its archaeological site is a lovely view of the Šentjurju and the surrounding hribovju.
A detailed description of archaeological site you can read at the top of Rifnika, where finding a nice renovated and clearly presented.
On the northern side Rifnika (10 minutes below the top) is located Reicheneck ruins of the castle, which was first mentioned in 1281.