I have cities, but no houses I have mountains, but no trees I have water, but no fish I have roads, but no cars What am I

I am a circle with a missing heart, but I am not broken. I have a skin of gold and sometimes a crown of sugar, yet I have no head. I have a ring but no finger to wear it. I have a body, yet I am hollowed out by my own birth. If you seek my beginning, you will find yourself back at the end. What am I?

I look like a dessert, but I’m not sweet or pink. On a breakfast plate I’m found, next to eggs all hot and fluffy.

A region in Europe I am from, to the rest I could say wine for everyone.

I come for all, both rich and poor, no lock can keep me from your door. The final step, the closing breath, the great equalizer none outstep.