A group of mathematicians (with nothing better to do) figured out how to win at Monopoly. The best property to buy is not Park Place or even Marvin Gardens.
The best property to have in your arsenal is Illinois Avenue. It’s one of the red ones just past Free Parking. B & O Railroad is the next best. The best place to build houses: orange (New York, Tennessee, St. James) because that’s where players just getting out of jail are most likely to land.
Broadway and Park Place have the highest rents, but fewer people land on them because they’re right after the Go Directly To Jail square.
And here’s a hint: once all the properties have been bought up and players are building houses don’t EVER pay $50 to get out of jail early. Staying in jail keeps you from landing on property and paying rent.