After a few days in Istanbul you will have likely heard the name Mimar Sinan (1489-1588) many times, and before long you will have seen some of the architect's works, from the kitchens of the Topkapi Palace to the city's largest mosque, the Süleymaniye. The 16th-century architect is considered the master of classical Ottoman architecture, whose buildings are soaring achievements that built on the Byzantine goal of creating voluminous spaces under floating domes.
Just slightly off of the tourist trail, at a few hundred meters to the west of the Spice Bazaar, the Rüstem Pasha Mosque is a gem by Sinan that deserves a detour. You'll get to experience the architect's work on an intimate scale while another highlight of this mosque is the Iznik tile work that was at its peak in the 16th century. While in the more famous Blue Mosque much of the tile work is high above visitors' heads, here it is at eye level—all the better to appreciate its details. If some of the spiritual atmosphere of other mosques is lost with the crowds of visitors, at Rüstem Pasha it is still possible to experience a moment of silence admiring the blue tiles before heading back out into the city.