This mausoleum in Samani Park, completed in 905, is the town's oldest Muslim monument and probably its sturdiest architecturally. Built for Ismail Samani (the Samanid dynasty's founder), his father and grandson, its intricate baked terracotta brickwork – which gradually changes 'personality' through the day as the shadows shift – disguises walls almost 2m thick, helping it survive without restoration (except of the spiked dome) for 11 centuries. Behind the park is one of the few remaining, eroded sections (a total of 2km out of an original 12km) of the Shaybanid town walls ; another big section is about 500m west of the Namozgokh Mosque .
