10:00 · Sultanahmet Meydanı — Sultanahmet Square
Board the open-top double-decker bus from the starting stop at Sultanahmet. Put on your audio guide headset and choose your language from 8 options. Your ticket is valid for 2 days; today you can ride the Red Route and continue tomorrow on the Blue Route, or use both on the same day.
Taksim Square
The route heads from the historic peninsula toward Beyoğlu and Taksim. Along the way are some of the city's liveliest districts, such as Galata, Karaköy and Taksim; hop off at any stop to stroll along İstiklal Avenue, then board the next bus. Since the ticket is valid all day, there's no limit to how many times you hop on and off.
Bosphorus Route 3 Pier
Join the 1-hour 45-minute Bosphorus boat tour included in your ticket. From the boat you'll see waterfront mansions, Dolmabahçe and Beylerbeyi palaces, Rumeli Fortress and the Bosphorus bridges from the water. After exploring the city by land, you'll get to know it from the sea as well; the skyline of both shores is best seen from here.
Üsküdar Meydanı — Üsküdar Square
The Blue Route crosses the Bosphorus Bridge to the Asian side; hop off around Üsküdar to see the Maiden's Tower view and the waterfront promenade. Since your ticket is valid for 2 days, you don't have to fit both routes into the same day; you can pick up where you left off on the second day.