Mars
I just spent an hour looking at Mars through my 6 inch telescope. The Moon is so bright that other things are not very visible ( though I did look at the clusters M46, 47 and 50)
At first all I could see was the North Polar cap as the planet itself was “boiling” with the turbulence of the air above me. With a red filter and patience more came into view. Looking it up I can see that Mare Acidalium was very clear as was the Syrtis Major region disappearing towards the limb.
To be honest, it is not that clear a view but there is something magical about looking across millions of miles to another world.