At the back of the sink or toilet, the ceiling height can be as low as 60 inches. Vanity and sink heights have no requirements for height; the recommendation is that they fit the height of the user, ranging from 32 to 43 inches.
This year's edition of the World Urban Areas Report covers more than a thousand of the largest cities in the world, from Tokyo (pop. 37,000,000), right down to tiddlers like 850th-ranked Leicester (Pop. 534,000): all 1,009 cities, in fact, with a population of half a million of more. Here are the top 10.
Which one you regard as the holder of the title, all depends on what you mean by city. Most experts will tell you that Tokyo is the world's largest metropolis, with a population of about 36 million people. But the core of the city has only eight million people living in it.