Wayfinding is a common problem among museums, and you might think it's necessary to spend a lot of time and resources to devise the perfect solution. The floorplan at the Met is quite complex, so when we set out to build a map feature for the Met App, we knew it would be a formidable challenge. If that weren't enough, our small team had only a short period of time to design and develop a mobile map that could be used on two native platforms, and, most importantly, would be useful for our visitors. Instead of spending months building a product that we think our visitors want, we decided to build a minimum viable product (MVP) that our visitors could be using sooner rather than later. We then used a build-measure-learn feedback loop to iterate and perfect the Map to improve the day to day experience of our visitors. We will discuss the process behind building the Met App Map, and we'll share what we learned along the way.