Field recording from binaural headphones. The sounds of clanking shopping carts, a busking accordion player, plastic on produce, an old lady's suggestion for the improvement of the shopping experience.
It's like you're really there. Is that where you want to be?
If, while listening, you decide that it is NOT where you want to be, you can discontinue the experience by interrupting playback at any time. There is no risk of physical displacement nor of actual time travel.
All sounds, while representing an actual time and place, are safely contained by the digital format, at no risk to you, the listener.