Which major city is this?

Sahara. The Richat Struc­ture in Mau­ri­ta­ni­a, also known as the Eye of the Sahara, was in­ter­pret­ed as an asteroid impact struc­ture, but no evidence for shock meta­mor­phism has been found. Today sci­en­tists believe that it is a huge (40 km in di­am­e­ter) and deeply eroded geologic dome.

Post-glacial. Sable Island is believed to have formed from a terminal moraine de­posit­ed on the con­ti­nen­tal shelf near the end of the last Ice Age. It emerges from vast shoals and shallows which, in tandem with frequent fog and sudden storms, have caused over 350 recorded ship­wrecks

Agri­cul­tur­al fields. This is an as­tro­naut photo of the Al Khufrah Oasis in Libya. The circular shape of fields is char­ac­ter­is­tic of center pivot ir­ri­ga­tion. These fields are ap­prox­i­mate­ly 0.6 mile (1 kilo­me­ter) in di­am­e­ter. Lighter colors indicate fields that have been har­vest­ed recently or just planted.

Byzan­tium. In 660 BC, the city was founded as the colony of Megara and named to honour its king Byzas. In 324 AD, Con­stan­tine the Great made it an eastern capital of Roman Empire. The city was then renamed Nea Roma; however, most simply called it Con­stantino­ple.