istanbul city highlights full day tour: sophia, topkapi palace, hippodrome, blue mosque and grand bazaar | small group of... small group tour start /end city: istanbul / istanbul duration: 8 hours product code: 670260 highlights: • this is a customised full-day small-group tour with an expert local guide • visit topkapi palace, it housed the ottoman sultans for nearly 400 years •... see all from usd $85.00 see details compare