Eunuchs

Imperial Palace

Basilica of San Vitale: "Another panel shows Empress Theodora solemn and formal, with a golden halo, crown and jewels, and a group of court women as well as eunuchs."
See en.wikipedia.org

Young boys termed Slavs (Arabic Ṣaqāliba) in the Arabic texts were brought to Cordoba by the thousands to serve as palace eunuchs, . "The most lucrative slave market was the Islamic slavery in Al-Andalus. The Arabic Caliphate of Córdoba referred to the forests of Central and Eastern Europe, which came to function as a slave source supply, as the Bilad as-Saqaliba ("land of the slaves")." (wiki) - see link for Medina Azahara example
See en.wikipedia.org

See www.ucl.ac.uk

Beijing

Alhambra

Young boys termed Slavs (Arabic Ṣaqāliba) in the Arabic texts were brought to Cordoba by the thousands to serve as palace eunuchs. "The most lucrative slave market was the Islamic slavery in Al-Andalus. The Arabic Caliphate of Córdoba referred to the forests of Central and Eastern Europe, which came to function as a slave source supply, as the Bilad as-Saqaliba ("land of the slaves")." (wiki)
See en.wikipedia.org

See know.burrp.com

Jerulsalem's Dome of the rock was guarded by black eunuchs (source: Eunuchs and Castrati: A Cultural History)

during imperial time eunuchs from the capital came here to perform Taoist services and pray for peace and longevity for the emperor, concubines, princes and princesses

Topkapi Palace

Ming Imperial Tombs includes a tomb of an eunuch of the last Ming Emperor

former center of eunuch trade (source: Eunuchs and Castrati: A Cultural History)