General public returns to the World Trade Center to memorial plaza . 7,000 visitors from 46 states , 30-plus countries are expected this week . Families of victims were able to visit the memorial Sunday during ceremonies honoring those who were killed in the September 11 , 2001 , attacks that brought down the twin towers . Comment:
General public returns to the World Trade Center to memorial plaza . 7,000 visitors from 46 states , 30-plus countries are expected this week . Comment: