First Day in Istanbul

Well, I've finally reached my last stop before heading home.  I'm eager to get home but I still have two more days here in Istanbul. I was still a bit fatigued from the overnight train/bus ride from Provdiv but I went to the Blue Mosque, Grand Bazaar and the Spice Market today.  Istanbul has a population of about 20 million people so the streets and markets are very crowded.