Under the buildings is one of the largest parking lot in the country with about 1160 parking spaces. Access to it is from Harpa, Pósthússtræti and Austurbakki. Access to all the buildings on the plot is through the basement. 24-hour security will be in the basement, which will be open 24 hours a day, every day of the year. Lighting and markings will be first class and in addition, a complete navigational system will be provided to make it easier to find parking spaces, get directions on where cars are located and how to get to and from where the car is located from the buildings.