Sultan Ahmet Camii (Blue Mosque)

wow

The mosk is really just worth seeing (for the average tourist at least, excluding people with a special interest in mosks/history) from the outside. However, the entrance is free but you are expected to donate. As it is one of the tourist places still in use for the locals, there are always prayers – thus you cannot go in and behave disrespectfully. This includes women wearing short skirts or trousers, reveilig the shoulders or (god forbids) a cleavage or your hair. But dont worry, they will give you scarves and long cloth to cover yourself up, but you might want to bring your own just cause it’s cleaner.
DO (!) wear or bring some socks as you have to go in barefoot, which can be quite a lot to ask on a hot summerday, in a crowded mosk, where there is carpet everywhere and an intense smell of feet.

It’s one of the main places that you have to go to visit in Istanbul. The exterior architecture does everything to confirm the impression that you had of Istanbul before coming, and inside it is just as enchanting with sumptuous mosaics everywhere that the eye can see… don’t forget to take off your shoes at the entrance. Definitely take the time to check it out!!!

Beautiful Mosque with access for non muslims also to tour (during non prayer times.)
chandaliers and pillars are huge as though they were forged by giants.
kind of ruined by people selling toys in the courtyards.

Technically the Sultan Ahmet I mosque, everyone knows it as the Blue Mosque. It was built in the early 17th century to rival the size and beauty of the nearby Aya Sofia. It has six sky-scraping minarets, a huge coutryard, and does indeed trump the Sofia with its exterior (though the latter has a more impressive interior). It gets its name from the blue tiles that cover it.

Its such a popular attraction that entrance is controlled: from May to September tourists cannot use the main door and are sent through a side entrance.

It's certainly a massive and impressive monument.