Down in the old city, there is...
by tompen
Down in the old city, there is a complex of parks and mosques. The Hagia Sofia and the Blue Mosque are there. Inside the Hagia Sofia is simply awesome. It is so huge and beautifully decorated. All around is a lovely park. I hope I'm getting the names of these places right. Please be patient if you click on the image because it's rather large, but I think you'll find it worth the wait.
Soliman Mosque
by SirRichard
Maybe the 3rd most famous mosque here, after Hagia Sophia (museum now) and the Blue Mosque. Is really huge and impressive. To get there, cross the University from Divan Yolu, it’s just at the back.
From the terrace you can have a beautiful view of the Bosphorus and the Golden Horn, Europe and Asia…
Pay after you finish
by Erkmen
In many European countries, when you have something to drink in a coffeshop or a pub, you will be asked to pay immediately when you order.. However in Istanbul you can order your drink, drink it and pay when you are leaving the shop..
The bosphorus boat trip
by ophiro
The trip up the bosphorus to the black sea is very relaxing trip and i think it is a must for a tourist but sometimes the problem is time.
If you will take the tourists' boat it will cost you 30 usd but if you will take the locals' boat it will cost 7.5 YTL.
Theodosian Walls
by balhannah
These, big, ancient Walls I saw several times as I toured around Istanbul. Some are still in ruins, and some have been restored. Evidently, the wall contained 8 main gates. The main public gates led across the moat on bridges, while the secondary gates, traditionally called "Military Gates", led to the outer sections of the walls.
They are located on the outskirts of Istanbul, built by the Byzantine Emperor Theodosius II (408-450) who expanded the area of his imperial capital of Constantinople by building these great land walls farther out into the country. When finished, the Theodosian Walls were almost 7 kms in length. They were breached only twice: in 1204 by the armies of the Fourth Crusade, and in 1453, a thousand years after they were built! by the gigantic cannon of Sultan Mehmet the Conqueror, after which Constantinople became Istanbul.
Every time I write that, I want to sing the song!!!
In 1894 a disastrous earthquake toppled parts of the walls.
There is also the Palace of the Porphyrogenitus which is a large three-story building located between the inner and outer fortifications of the northern corner of the Theodosian Walls. On the east is the remnant of a balcony. The roof and all of the floors of the structure have disappeared. The remaining walls are elaborately decorated in geometric designs using red brick and white marble typical of the late Byzantine period.
You will have to look at your map to decide where you want to go and have a look at them.