What sort of events are there for artists to sell their work?

I've been making 3D city maps for a couple of years now and am trying to find ways to try and sell them, as it's getting more and more difficult.

I've recently made a Boston map, for example. Some photos: https://imgur.com/gallery/boston-make-3d-ZlBvjpV

What kind of events are there that I could sign up for and have a little booth or something to sell some of my work?