Evening Prayer Call at the Blue Mosque in Istanbul, Turkey. You can hear other neighboring mosques making their call in the background. They delay them intentionally so that during the prayer call it is continuous in each area. Also, the lights strewn across the 2 minuets has to do with Ramadan (which started 2 days earlier). The prayer calls happens a few times during the day, starting about 6am. Hopefully your hotel room has thick windows if you are staying in Sultanahmet!
(I will say that this is not the most exciting video you'll ever see, however from a cultural perspective its very intersting. Remember, this prayer calls happens multiple times a day at every mosque (they all have loud speakers) throughout every town in the Muslim world.)