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.
Although Tokyoâs population is projected to decline, it will remain the worldâs largest city in 2030 with 37 million inhabitants, followed closely by Delhi, whose population is projected to rise swiftly to 36 million in 2030.
Here is the list of world's most populated cities as reported by the UN. 1. Tokyo, Japan : Tokyo tops the list and remains the world's largest city with 38 million dwellers. Though the UN has predicted a decline in the city's population, it will still remain the world's most populous city in 2030 with 37 million inhabitants.