Utility buildings will make your park management easier.
To find them, tap on the SERVICE category in the Build menu, then on the UTILITY tab.

INFORMATION CENTER : 
  • Rides in range of the Info Center will attract more peeps.
  • Having many will boost the overall satisfaction.
RIDE MAINTENANCE :
  • Rides in range have higher durability, and take longer to break.
  • Place the Maintenance Building near rides, to cover as many rides as possible. Note how rides in range appear in blue (and don't forget to connect them to paths). 
JANITOR :
  • Will reduce the negative impact of ride's Nausea  by boosting hygiene.
  • Will remove trash form the path.
  • If your park gets dirty, Hygiene will drop quickly.