In standard Monopoly, what's the rent if you land on Park Place with no houses?

In standard Monopoly, if you land on Park Place with no houses, the rent is $35. This is because Park Place is one of the dark blue properties, which is a more expensive set in the game. Without any houses built on it, the base rent for Park Place is $35. However, if houses or hotels are placed on the property, the rent increases significantly.