Have 30 employees
Have all food on 5 stars
Reach the last reward from quests
Build a hotel room
Have 100.000 coins at once
Level up an employee to level 10
Finish all of the researches
Unlock the fourth floor
Have a bar with all barrels purchased and filled
Do an event for the king and the queen
Have one food dish on 5 stars
Have all 6 historical paintings
Have a 5 star hotel room
Unlock the second floor
Have a successful adventure which had less than 30% chance to succeed
Unlock the third floor
Unlock the kitchen