The building features a stone column that served as an ancient sundial mechanism.
The minaret was intentionally designed with a hollow center to facilitate astronomical observations.
Caca Bey, the founder, was a high-ranking Seljuk commander of Mongol descent who served as the governor of Kırşehir.
The dome, though originally open to the sky to permit star gazing, was later covered during its conversion into a mosque.
The building was constructed using cut sandstone, which has preserved its structural integrity for over 750 years.
Detailed astronomical research conducted at this site contributed to the scientific advancements of the Ilkhanate period.
The portal's decoration includes motifs that are theorized to represent celestial bodies and orbital movements.
Cacabey Medresesi is a 13th-century Seljuk Turkish astronomical observatory and madrasa located in the center of Kırşehir, Türkiye. Originally constructed in 1272 by Caca Bey, a Seljuk governor, the building functioned as an academic center for astronomy and Islamic studies. Its architectural design features a central courtyard covered by a dome, flanked by two minarets that doubled as observation towers for studying celestial movements. The main portal displays intricate stone carvings, typical of late Seljuk stonework, with geometric patterns and inscriptions. The building serves as one of the few examples of a structure purpose-built for scientific observation during the period. It transitioned into a mosque following its academic use. The site remains a focal point for understanding medieval Islamic scientific advancement in Anatolia.
The main entrance portal from the street level to capture the full scale of the stone geometric carvings.
Check the exterior stone carvings on the main portal closely to spot the geometric motifs representing planetary bodies.
Visit during the shoulder seasons to avoid the heat of the central Anatolian plateau.
Spend time in the surrounding town square to see how the building integrates into the local city planning.
Do not overlook the exterior facade, as the most significant astronomical symbols are carved into the outer stonework.
Dress modestly as the site functions as an active mosque; remove shoes before entering the prayer area.
