title: Emulate Apple's custom map annotation callout in Photos app
body: <p>In Apple's built in Photos app on the iPad, if you select the Places tab you'll see a map with pins (annotations) showing where you took photos.</p>
  
  <p>If you select a pin, instead of the standard, text callout bubble you get a nice thumbnail of the photo (s) taken at that location.</p>
  
  <p>I have Googled this to death but cannot find a solution which allows us to create custom callouts like this. Has anyone got any ideas?</p>
  
  <p><img src="https://i.stack.imgur.com/Q0vf1.jpg" alt="iPad Phtos App"></p>