In the eastern part of the Old Town, where ancient stones preserve the memory of emperors, stands Grazer Burg (Graz Castle). This unique architectural ensemble, founded in the 15th century, served as the residence of Austrian rulers for centuries. Today, the castle in the city of Graz is a harmonious blend of Gothic and Renaissance styles, serving not only as the administrative heart of Styria but also as a significant historical monument within Austria.

The true "jewel" of the complex is the Double Spiral Staircase—a late Gothic masterpiece created in 1499. Two opposing staircases meet on each floor, forming a whimsical shape often called the "staircase of reconciliation." Beyond the architectural wonders, you can find the mysterious abbreviation A.E.I.O.U. on the building facades, the motto of Emperor Frederick III, whose meaning historians still debate today.
The modern appearance of the castle encompasses three inner courtyards and several wings, including the Friedrichsbau and Karlsbau. It is a living space where history meets modernity: while administrative work hums in the offices, tourists are free to explore the courtyards, admire the ancient sgraffito, and enjoy the tranquility of the adjacent Burggarten garden.