An aerial view of Ground Zero is seen from the...

An aerial view of Ground Zero is seen from the north side of the site the day of President Barack Obama's visit. (May 5, 2011) Credit: AP

Tickets for the memorial to 9/11 victims expected to open in September will be available for free online through a timed reservations system.

Memorial chief executive Joe Daniels said Thursday that the online ticketing system will be activated in July.

The memorial will open to victims' families on Sept. 11.

Once it's open to the public, starting Sept. 12, priority will be given to visiting family members.

The memorial will be the first thing that opens on the 16-acre World Trade Center site.

It will be surrounded on all sides by construction activity.

Daniels said memorial visitors will be instructed to report to a location south of the site. From there, they will be escorted to a security screening center.

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Updated 16 minutes ago Thieves steal hundreds of toys ... Woman critically hurt in hit-and-run ... Rising beef prices ... Out East: Nettie's Country Bakery

Woman critically hurt in hit-and-run ... Destination Unknown Beer Company closing ... Rising beef prices  Credit: Newsday

Updated 16 minutes ago Thieves steal hundreds of toys ... Woman critically hurt in hit-and-run ... Rising beef prices ... Out East: Nettie's Country Bakery

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