Your own home works nicely, or a close friend's place. Somewhere you won't be disturbed, with a comfy place to sit/lie down. Music is nice but optional and you may not notice it anyway if you take enough. DMT trips are so intense that you often don't notice your surroundings at all, and if you do you'll be too 'out there' to act normal if you have to interact with strangers. Plus, it's kind of conspicuous to bust out a crack pipe full of DMT and smoke it in public, and in most states they'll throw the fucking book at you if you get caught smoking DMT in public. A lot of risk, a lot of hassle, very little benefit. I would stick to orally active psychedelics for tripping in public, and then only when you're very experienced with the substance in question.
If you have a private, secluded outdoor location where you are sure you won't be disturbed/noticed by random park-goers, though, then low-mid dose outdoor DMT could be very enjoyable. Not much point going for a breakthrough, IMO, but sub-breakthrough the scenery could be nice. Make sure it's a comfortable temperature whenever you decide to try.