To go along with the Small and Medium Stadiums, I wanted to suggest sports teams. This would allow you and others to "play" sports. If you "win the game", you gain money. If you lose, nothing happens. When you have a "game", a lot of your colonists and tourists go to the stadiums.
Also, I wanted to suggest a Sports Arena.
Details
4x4
150 jobs
1250 tourists
500 colonists
Requires
-25K steel
-25K ore
-20K water
-20K money
-15K gold
-5K rum
-5K plastic
-5K food
-2500 microchip