I'd take them to the Unknown system with the monkey-planet in
All those bizarre spiky rocks, translucent Nomads flying around, the bizarre blobs of glowing yellow all over the place, nebulae in the distance - is it just me, or does that whole system look like a tunnel through a nebula or something? And are there two stars? Yeah, that's the nicest view.
Second place for sightseeing would be my patrols into the various dustclouds off Deshima station, in the Shikoku system. They're nice...
For those tourists on an adventure holiday, I'd take them on my rounds in Omega-7. Radiation burning through the hull, Red Hessian's trying to speed that up a little, loads of other wrecked ships in a dense asteroid field around a dying sun... ha, you can shove your safaris, shove your Orbital Spa and Cruise liners -- Jackson Tours, that's where it's at!
"If it aint on fire, you haven't shot it up bad enough yet" - my old teacher on Planet Housten.