Space

Agreed. We know so little about Venus compared to Mars despite it being slightly closer to us. That whole drama with the phosphene gas a few years back really revealed how much there is to learn there.

I also love that one of the serious ways scientists have proposed for colonizing Venus is to build cities that float in its clouds at the altitude where the atmospheric pressure / temperature are roughly the same as Earth's. It's simultaneously batshit insane and hoplessly romantic.