When you have an info window open (
such as the one that does not open when you click the building picture) it pretty much covers the whole screen on mobile.
In fact if you read the info you often have to scroll down to read all of it which also scrolls the close button out of view.
And when you press back button the info window does not close but the page behind the info window goes back.
This is against sanity, common sense, and Android interface design guidelines.