Best Small-Group Grand Bazaar Shopping Tour in Istanbul. Sharpen up your bargaining skills while exploring Istanbul’s Grand Bazaar on this must-do 3.5-hour walking tour. As one the world’s largest covered markets, the Grand Bazaar is home to thousands of shops and stalls spread over nearly 60 blocks. Find the best places to shop in this mystical maze as your local guide introduces to you its best traders and helps you to bag a few bargains! Book Now and Save 10% Off Best Small-Group Grand Bazaar Shopping Tour in Istanbul.