 Why don't tourists go to Lunar City?
Once in two weeks Earth-time a rocketship came around the horizon from Lunar City with stores for the colony deep underground. When it was first found, scientists descended into it to examine the exposed rock-strata and learn the history of the Moon before its craters were made. The occupation made it absurdly easy to live on the surface of the far side of the Moon, whether anybody else could do it or not. Not one passenger disembarked even for Lunar City. The second luxury liner took off with only four passengers and turned back before reaching the Moon. Workers for the lunar mines could make the trip under heavy sedation. But there was a marked shortage of artists' materials on the Moon.
 Tourists went insane when faced with the vastness of space.
 Lunar City is on the far side of the moon. It's far too cold for tourism.  Tourists went insane when faced with the vastness of space.  Lunar City is not a resort, it's a mining town.  It's too expensive, $100,000 for a 12-day cruise.