Shadiyakh or Shadyakh was one of the main Palaces,Gardans and Great Neighborhood of old Nishapur

Nishapur

Nishapur or Nishabur , is a city in the Razavi Khorasan province in northeastern Iran, situated in a fertile plain at the foot of the Binalud Mountains, near the regional capital of Mashhad...

 that established by Abdullah ibn Tahir al-Khurasani up to the 9th century AD, which became more important and populated after that. Some notable people like Attar lived there. Attar's tomb is nowadays in that area. This palace was perhaps completely ruined in 13th century AD.

Now Shadyakh Is national Iranian monuments, and its registration number is 10910.

Archeology

Excavations began in 2000 there and continued for around 2 years: buildings (possibly a palace), skeleton, equipments and other items were found there.