Massimo and I happened upon what I think should be a more recognized tourist attraction in Prague: the "McWalk" in McDonald’s! It’s like a drive-thru window; except it’s a walk-through open 18 hours a day.
According to my research, there are only two McWalk’s in the world: one in Prague, and one in Haifa, Israel.
I say this because the Prague Post claims that Prague is home to "the only McDonald’s in the known world with a ‘McWalk’ window." And yet a Google search turned up one other location, in Haifa, see photo below. All other results pointed to Prague.