With over 200 boards per square mile in Manhattan alone, you really couldn't walk very far through NYC without being bombarded by OOH ads. In fact, there are so many boards that planning a campaign here can be a bit daunting (my team can help, obviously).
I have access to a number of different publishers all over the city - Intersection, Outfront Media, Lamar, Clear Channel, and a bunch more to explore. The main formats I'd recommend looking into are the Billboards and public transport networks (Subways, Train Stations) as well as the street furniture (Urban Panel) that are scattered across the city.
Like Google or Meta ads, I'm an self-service ad platform.
All you have to do is make an account to get started.