The door

You find a random key on the street, and when you fall asleep, you find yourself in an empty space with a door in front of you. This door will allow you to go anywhere on Earth, regardless of whether you have been there or not, as long as you know its approximate location or can visualize it in your head. Although unbeknownst to you, when you go to these places, it's not just a dream, and what you do there actually happens, although you are not visible. I hope everyone enjoys!