No more of those coin drop meters for Portland! This is a parking station - they are found all around town, and especially downtown. You can use either a credit card or coins to pay for your parking time. Many meters, like this one, have a time limit (in this case 90 minutes) - you cannot pay for more than that and you cannot park in this area for longer than an hour and a half. Once you pay, a small ticket prints and you place it inside your car in a window that faces the curb. You can also buy a ticket in one station and then move your car within the allotted time - using the same ticket. Very convenient if you're running errands or such!