City of Graz – Schloss Eggenberg / core zone, UNESCO World Heritage castle in Graz, Austria
Schloss Eggenberg is a Baroque castle on a hill with four corner towers and 365 windows arranged in a rectangular layout. Inside, 24 state rooms showcase elaborate decorations and historical furnishings from various periods.
Construction of this Baroque palace began in 1625 under Prince Hans Ulrich von Eggenberg, who incorporated astronomical and mathematical principles into its design. The building served as a noble residence for centuries before becoming an important cultural site.
The ceiling frescoes throughout the state rooms feature zodiac signs, Roman gods, and classical mythology scenes. These images reflect the owner's interest in learning and art during the Baroque period.
The surrounding gardens remain accessible year-round and offer pleasant walks around the grounds. Guided tours through the interior rooms operate from April to October and are available in German and English.
The castle follows a mathematical concept: the 365 windows represent the days of the year, and the 24 state rooms represent the hours of a day. This deliberate system shows the connection between architecture and cosmic ideas that were popular in the 17th century.
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