Here’s a super cool site we found that lets users listen in on cities and their sounds. Here’s a blurb from their website:

Soundcities was the first online open source database of city sounds and soundmaps from around the world, using found sounds and field recording. There are now thousands of sounds from around the world on the website. The Database is also open so anyone can upload sounds they collect from world cities, thereby making a contribution to the project and making an online sounds archive.

Listen in and get lost.