About
Sey Spa, located 18 km from Kızılcahamam and 2 km from the Kızılcahamam–Çerkeş highway in the Sey Stream Valley, was constructed on the remains of a Roman bath. Structural traces of the original Roman bath are still visible on the site today. Sheikh Hasan endowed his properties for the maintenance of the spa and established a zaviye to provide services to visitors. The İskender Paşa Mosque stands adjacent to both the zaviye built by Sheikh Hasan and the Sey Spa. It was constructed by İskender Bey using building materials from a church dating to the Roman period. As a reward for defending Ankara Castle against Cem Sultan, Sey Spa was granted to İskender Bey as a waqf (endowed property).