The outdoor 9/11 Memorial is open daily and does not require tickets or reservations, while museum entry is ticketed and can be purchased up to six months in advance. At the memorial, visitors can walk the perimeter of the pools to read the names of the nearly 3,000 people killed on 9/11 at the World Trade Center, at the Pentagon, and in Shanksville, Pennsylvania, as well as those killed in the 1993 World Trade Center bombing, etched in bronze panels around the pools’ rims. At the museum, there are three sections: before September 11, the day of, and after. Inside the quiet halls, visitors can explore expressive artworks, walk down the very staircase used by workers to escape the buildings on 9/11, hear voicemail messages left by the victims to loved ones, enter a quiet space for reflection, and watch several videos including a time-lapse film of the transformation of the WTC site. Most weekdays, the museum holds live, 30-minute talks featuring survivor stories and personal tales of remembrance.