The face of the Main Wall greets you upon entering the Memorial. On the reverse side of the Main Wall are Memorial Tiles. This wall filled up with tiles shortly after the dedication, which prompted construction of an additional two walls. Over the years, several tiles have been added; the second wall was filled completely in 2003, and as of 2021, only one side of the third wall remains open.
Only pedestrian traffic is allowed on the causeway and island. Local ordinances prohibit activities such as fishing, swimming, bicycling, rollerblading, skateboarding, sports activities and viewing of fireworks from the Memorial.