This is the astonishing C10 Mausoleum of Ismail Samani in Bukhara. Incredibly detailed brickwork. It has unfortunately had some modern cement pointing repairs but the level of detail is just incredible. Rather unusually for the location and period, it does use a lime mortar. Most other structures that I saw in the area used earth mortars. The modern cement pointing will need to be taken off and done again using a lime mortar if the building is to remain largely undamaged. Access to skills and conservation expertise is minimal in Uzbekistan.