I love finding street art and quirky buildings, but there’s no place to share these discoveries on a map with others. Please build an iOS app where the map is the centerpiece: people can drop public pins with photos, a short description, and tags; others can view them, comment, and add their own photos. The map must stay smooth even with thousands of pins and thumbnail previews while panning and zooming, and a live feed should reflect new spots as soon as the community posts them. Use MVC overall, a UIKit-based map for maximum performance, and SwiftUI for the detail and comment screens. Manage third‑party libraries with CocoaPods.