Now to anger surrounding the long delayed opening of the 9/11 memorial museum. Some victims' families are outraged about the admission price and gift shop at a museum housing human remains. ABC's gio Benitez is there at ground zero.

Good morning, gio. Reporter: Good morning, robin. Those remains are in a private room underground but in the same building as that gift shop and so this morning some of the families tell me they are furious. More.

Robert Simko, longtime Battery Park City resident and community newspaper publisher, hopes the National September 11 Memorial Museum will be a testament to the morning of 9/11.

"The story needs to be kept alive," said Simko, who, like hundreds in the neighborhood, watched from their windows as two hijacked jetliners crashed into the towers. More.

There’s a small piece of paper at the new National September 11 Memorial Museum with my name scrawled across the top. Underneath my name, in black ballpoint pen, it says: Abd pain; Diff breathing; Inhalation.

A plastic bag with Andrea Haberman's personal possessions -- her purse, glasses, keys and a checkbook -- had been tucked away in a drawer in her father's Wisconsin home since 2004.

Gordon Haberman had lovingly been holding on to the items his 25-year-old daughter was carrying when terrorists hijacked planes and flew them into the World Trade Center, the Pentagon and a Pennsylvania field on Sept. 11, 2001. More.

The oldest of Joseph Paolillo's three sons was 3 ½ and the other two were not yet born when his brother, John, was killed in the north tower on Sept. 11.

But Paolillo, of Glen Head, said all three, Martin, 15, John -- named for his uncle -- 12, and Raymond, 10, have grown up hearing about their uncle so much they feel as though they know him. More.

The 9/11 memorial, more formally known as The National September 11 Memorial, no longer requires passes in order to gain admittance. The memorial is completely open to the public, with no more lines or reservations needing to be made.

Tony Award-winning actress LaChanze Sapp-Gooding, who was called in at the last minute to perform, had a very personal connection to 9/11. More.

The video footage of the moment the second plane hits the World Trade Center can still shock, even though we've seen it so many times.

And here, below the surface of the World Trade Center, the memory of Sept. 11, 2001, lives on. Vividly. Painfully. More.