Jeff Williams from ISS
(B69) The Poteidaia Canal, on the Kassandra Peninsula in Greece, was likely first dug during the Roman Empire and then recut in the 1820’s. It appears that coastal currents and erosion over 2000 years have displaced the two sides of the isthmus.
(B76) Coral reefs and sand waves, Mozambique Bazaruto Archipelago
(B86) This city is Chalcis, Greece. The island of Euboea, on which the city is located, cannot get any closer to the mainland.
(B87) Travel across the Bosphorus strait, Istanbul Turkey. Continental boundary between Europe and Asia.