Which places work? Do I get streets outside the US?

Any place you can search. Our own map covers the US, Canada, the UK & Ireland, Australia and New Zealand, and the streets, water and woods there come from it. In other countries the studio still fetches the streets and the rivers and lakes from OpenStreetMap when you pick the place, so a couple from Bath and York get their towns' streets and the river through town. A river mapped only as a line is drawn as a ribbon wide enough to see.