Registan Square
Three 15th-century madrasahs face each other across an open square: Ulugbek Madrasah (1420, built by the astronomer-king), Sher-Dor (1636, with the famous tigers above the gate), and Tilla-Kari (1660, with a gold-leaf prayer hall inside). Go at sunrise before the buses arrive — the light on the blue tile is otherworldly. Pay the small extra fee to climb the minaret of Ulugbek for the view.
There is no other place on earth where three monumental Islamic facades meet in one square at this scale.

