The two brown (dark purple in some editions) properties on the standard Monopoly board are:
Mediterranean Avenue – First property after GO; cheapest deed ($60).
Baltic Avenue – Second property; $60.
Key Stats
Rent (unimproved): $2 / $4 (double if both owned).
House cost: $50 each; Hotel: $50 + 4 houses.
Max rent with hotel: $250 (Mediterranean), $450 (Baltic).
Note: Early US editions colored these dark purple; international and modern US editions use brown. They are the only 2-property color group on the board.