"Istanbul residents keep watch on Beyazıt Tower for weather updates
The first fire pump in Istanbul was built in the 18th century, but the most effective tool in the fight against the city’s devastating blazes was the Beyazıt Fire Tower, constructed in 1828. The tower is no longer used for fire watching, but residents can turn to it to learn the next day’s weather thanks to a forecast system using colored lights"
More:Istanbul residents keep watch on Beyazıt Tower for weather updates - Hurriyet Daily News and Economic Review