Shedding a layer, shedding light

Just felt like sharing some of my lesser-known personal likes / hobbies / favourites, and a bit about myself:

The Lure of Cities

There’s Xanadu, Valhalla, Atlantis and mystical Mu
But most of all, I’d like to know about these two:
If you could, where would you go
Mythical Shangri La or legendary El Dorado?