Second Unipole Billboard at Agip Roundabout, Port Harcourt, Rivers State, Nigeria. This billboard is sure to be seen by a vast audience. It attracts a great target audience due to its location. It's 18m by 6m in size, the billboard content can be displayed on both sides, which means double the eyeballs that will view this billboard. About 3,000,000 (estimated) eyeballs see this billboard daily.