featured at the NYC 9/11 Memorial Field 5th Anniversary in Manhattan's Inwood Hill Park September 8–12, 2006. There 3,000 flags which represented those who died in the September 11 attacks. The flags were also featured on NBC's Today and on ABC affiliate WVEC in Norfolk, Virginia. The Remembrance Flag has a white background with large, black Roman numerals IX/XI in the center and four black stars across the top. The IX/XI are the Roman numerals for 9/11. The four stars represent World Trade Center North, World Trade Center South, the Pentagon, and Shanksville, PA. Virtual memorials The growing popularity of virtual worlds such as Second Life has led to the construction of permanent virtual memorials and exhibits. Examples include: Celestial Requiem NYC (Second Life) is a virtual recreation of a submitted physical memorial proposal: On September 11, 2007, a virtual reality World Trade Center Memorial will be presented to the people of the world. The location is in Second Life, on the island we have named after the original design: Celestial Requiem NYC. We have built this memorial because, to be blunt, the world needed it done years ago, and the two years longer to await the completion of the Reflected Absence memorial in New York city (by Michael Arad and Peter Walker) was in our opinion two years too long. World Trade Center Memorial (Second Life) is focused on the victims of 9/11, reminiscent of the Memorial Wall of the Vietnam Veterans Memorial. Planned September 11 memorials Palm Harbor 9/11 Memorial, Palm Harbor, Florida – This memorial broke ground . It will be designed around a 150-pound piece of World Trade Center steel provided (and still owned) by the Port Authority of New York and New Jersey. Gallery See also 9/11 Tribute Museum (9/11 Tribute Center), an online museum Flight 93 National Memorial National September 11 Memorial & Museum Pentagon Memorial World Trade Center Site Memorial Competition References External links Project 2,996 – A grassroots effort by bloggers to remember the victims on the 5th anniversary of the attacks September 11 Memorial Tattoos in the Staten Island Historical Society Online Collections Database 9/11 Museum Design Unveiled-New York Times'' article addressing 2012 Memorial Museum Complex National September 11 Memorial & Museum- permanent Memorial and Museum at the World Trade Center site 9-11 Garden of Reflection NYC Memorials and Monuments – A growing collection of photographs of NYC 9/11 memorials and