Thessaloniki, Greece cityscape aerial of lowrise red tiles rooftop houses on the acropolis of the Heptapyrgion Byzantine fortress, overlooking the city stretching to Thermaic Gulf. -- Available in HD and 4k -- 3840 x 2160 - 2.3 GB - QuickTime Movie - Apple ProRes 422 - 66.6 MB/sec - 29.97fps --