What part of the globe is land? Which city withstood the 900 day Nazi blockade, but did not surrender?

So, land occupies only twenty-nine percent of the earth’s surface, the rest is water. But it was Leningrad that withstood such a long blockade, now this city is called St. Petersburg. This terrible event began in September 1941, and it ended on January 27, 1944. To be precise, the blockade lasted not nine hundred days, eight hundred and seventy-two days.