World Trade Center Site (2:14)

Meaning of Trade Tower (2:03)

Plans for Site (1:17)

World Trade Center Collapse (2:19)

Safety and Architecture (1:14)

Slurry Wall (2:51)

Wall Shoring (2:46)

Super Strong Concrete (3:02)

Concrete Cores (1:30)

9/11 Museum (2:06)

Artifacts (3:32)

Architectural Challenge (1:51)

Glass (2:40)

Steel and Shape (2:43)

Steel Construction (2:21)

Process of Building High (2:10)

9/11 Memorial (3:18)

Names of Dead (1:41)

Forest (1:30)

9/11 Memorial (0:42)

Protection from Elements (1:42)

Glass at Base (1:32)

9/11 Museum Artifacts (1:40)

Spire (1:58)

Reviving Ground Zero (1:15)

Sponsors & Credits: Ground Zero Supertower (1:17).