# How to zoom a PolarPlot

Let's say I'd like to have the unit circle to the border of this plot:

PolarPlot[1, {θ, -Pi, Pi},
PolarAxes -> True,
PolarTicks -> {Automatic, Automatic},
PolarGridLines -> {Automatic, Automatic},
PlotRange -> 1.8]


PlotRange does not help zooming it, it just crops the graphics with the label. Have I missed something?

PolarAxesOrigin -> {π/2, 1} is for that purpose:
PolarPlot[1, {θ, -π, π},