The wonderfully-named Don Quiposte takes streets in Santos, Brazil and re-imagines them without all those unsightly power lines. Her results are quite satisfying, like clearing cobwebs or untangling a big mess of computer cables at home. 
From her profile:
Don Quiposte is an urban activist with the impossible mission of finishing with the electric postes of Santos- Brazil and other cities. Her motto is Impossible is Nothing.
Visualizations like hers do a great job of showing the real priorities of a street's design (is it a place for living? Or an electrical conduit?). More photos and commentary at Don Quiposte.