Sign: 'Where is Osama bin Laden?'

Cheryl Stewart's "Where is Osama bin Laden?" sign has been recently donated to the 9/11 Memorial Museum. (Jonathan Byerley photo)

The Lens: Viewing the 9/11 Memorial

Spools of wiring are stacked atop a bench of the 9/11 Memorial's plaza as construction work continues on the eight-acre park. (Amy Dreher photo)

100 Days Until 9/11 Memorial at WTC Opens in September

A countdown clock in the offices of the 9/11 Memorial tracks the days until the September opening. (Staff photo)

The Lens: Viewing the 9/11 Memorial

Work continues on the 9/11 Memorial plaza as trees provide shade on a warm spring day. (Amy Dreher photo)

AP: Another 9/11 Anniversary is Recognized Today

A 9/11 Memorial Museum exhibition design study includes a piece of remnant WTC steel used to project video footage of the recovery effort. (Courtesy Thinc Design with Local Projects)

The Lens: Viewing the 9/11 Memorial

Plant life grows as scheduled plantings of swamp white oak trees continue on the 9/11 Memorial's plaza. (Amy Dreher photo)