World Trade Center Plaza Sculpture

World Trade Center Plaza Sculpture
The sculpture in 1976 with The Sphere visible on the right. Ideogram is on the left.
ArtistMasayuki Nagare
Year1972–2001
Dimensions4.3 m × 10 m × 5.2 m (14 ft × 34 ft × 17 ft)
ConditionDestroyed during the cleanup

The World Trade Center Plaza Sculpture, also called Cloud Fortress, was a sculpture created by Japanese artist Masayuki Nagare in 1975. It was located at the World Trade Center complex at the Church Street entrance to the Austin J. Tobin Plaza.

Having survived the September 11 attacks, the sculpture was demolished during subsequent emergency efforts to access and clear the site.