To get a clearer picture, MIT's Senseable Lab partnered with the World Economic Forum (WEF) to create Treepedia, a site with interactive maps that show the density of greenery in major cities around the world.
The researchers used information from Google Street View to determine what they call the "Green View Index," a rating that quantifies each city's percentage of canopy coverage based on aerial images. When it launched in 2016, Treepedia featured 10 cities, but the team has since added five more to its list.
The goal of Treepedia is to make make urban planning more accessible to those outside the field, MIT's Carlo Ratti said in a press release.
Check out which cities boast the highest Green View Indexes below.
12. Los Angeles, California — 15.2%
10. Boston, Massachusetts — 18.2%
9. Miami, Florida — 19.4%
7. Seattle, Washington — 20%
5. Geneva, Switzerland — 21.4%
4. Frankfurt, Germany — 21.5%
3. Sacramento, California — 23.6%
2. Vancouver, Canada — 25.9%
1. Singapore — 29.3%
Here's what Singapore's Treepedia map looks like:
Singapore is known for its sleek high-rises and emphasis on trees and plazas.
By 2030, the city hopes to expand its green spaces even more — the goal is for 85% of its residents to live within 400 meters from a park, according to a 2013 Land Use Plan.