Forrest Almasi/Business Insider
These fairs function like trade shows for art galleries. A bunch of galleries from around the globe exhibit under one roof and try to sell their best new works to collectors that might otherwise not see them. They're annual destination events for art professionals, tote bag enthusiasts, and well-to-do collectors.
Each fair is a little different. I checked out NADA - a non-profit focused on art done by emerging artists and presented by new dealers - and the titular Armory Show, one of the highest-attended art fairs in the world. Here's what I saw.