Altoids Wall is the West exterior wall facing the I-95 expressway. It was named the Altoids Wall because back in 2008 the mint company Altoids hired some graffiti artists to paint an ad on that wall. It is a high impact spot because it faces such a high traffic highway.
This wall has been self policed by the artists ever since. The artists that are currently on it have been repainting their spots for years. They usually refresh their murals during the Art Basel season in early December of every year.