Are you supposed to play curling outside or inside?

Answer 1

Nowadays, curling is almost always played indoors on artificial ice surfaces either at curling clubs or in larger arenas for tournaments.

However, the origins of the game are outdoors, with the game originating on frozen lakes. Today, there are still some games played in the traditional manner outdoors and a few novelty events played outside, but for the most part professional curling has entirely moved indoors.