During centuries Registan Square was the center of Samarkand. The word Registan means "sand place". There was a river running there many ages ago, before building the first Madrassah on the square. Years passed, the river dried out and left lots of sank there, that was the first place where the first Madrassah was built in the beginning of the 15th century and named Registan square. As the Madrassah was first built, all the holidays, parades, festivals and Sunday bazaars took place.