The Spinnaker Tower is a 170-metre tower situated on the waterfront of Gunwharf Quays, offering spectacular views over Portsmouth Harbour and the Solent. The tower is 21Ú2 times higher than Nelson's Column, making it the tallest accessible structure in the United Kingdom outside London. It is visible for miles around Portsmouth, changing the horizon of the area and can be seen from the Isle of Wight, and even the Manhood Peninsula.

The tower represents sails billowing in the wind, a design accomplished using two large, white, sweeping steel arcs, which give the tower its spinnaker sail design.