Public works projects form the main part of your job as mayor, so use them to build all kinds of things around your town to make everyone's lives better! There are many different types of public works project available; which you build and where you build them is entirely up to you.
Once you've had your house built and earned the approval of the citizens in your town, you'll be able to visit the town hall and order a public works project to be set up. Then it's just a matter of funding it – once you, your friends and your citizens have donated enough Bells (the local currency) to Lloid, construction will begin! Be sure to attend the ceremony when the project is complete, to celebrate another success as mayor!