Singapore has made a point of ensuring that its built environment coexists with the natural world.
The city-state has a total land area of 728.3 square kilometers, or 281.3 square miles. With a population of over 5.5 million people, Singapore has had to maximize space and build upwards — at the expense of the greenery that once covered the land.
To minimize the impact on the natural environment, the government has implemented strict building regulations, including a program known as “Landscaping for Urban Spaces and High-rises” (LUSH).
“The city sets a certain ratio in terms of how much landscape the developer needs to create on top, on the side, or even inside the building to compensate for the landscape that’s lost on the ground,” architect and “Supertall” author Stefan Al told Insider.
Apart from building sky gardens and “living roofs,” developers are also encouraged to choose plants with a higher leaf area index, Al wrote in his book.