Tunnel Mountains, Banff National Park

I took a few deep breaths here, not forgetting I'm in Calgary Canada, one of those places with cleanest air.

I like Calgary for the fact that it is so vast and clean, and it being so close to the Canadian Rocky Mountains.

Calgary is over 2000sq mile in city and metro area and just over 1mil in population
VS
Singapore, just 270+ sq mile and population 4+mil

Don't get a feel - in terms of population ?
Calgary ~ 3,522.9/sq mi VS
Singapore 16,392 /sq mi

See the difference now?

This is taken at Tunnel Mountains at Banff National Park.