EDIT: The monolith has now apparently been removed. Link.
The answer below relates to when the monolith was still in existence.
Its location is apparently here, which is at 38°20'35.2"N 109°39'58.5"W.
The satellite image on google maps dates back to 2016 and already has this monolith, so its at least 4 years old (as of Nov. 2020).
Taken from some ...
Wikipedia has a page on that topic: Tourism on the Moon:
Space tourism companies which have announced they are pursuing lunar tourism include Space Adventures, Excalibur Almaz, Virgin Galactic and SpaceX.
The SpaceX project, dearMoon project, is one of the most likely projects to be successful in my opinion, but is not planned to take place ...