Original: The name "7 World Trade Center" has referred to two buildings: the original structure, completed in 1987, and the current structure. The original building was destroyed on September 11, 2001, and replaced with the new 7 World Trade Center, which opened in 2006.
Simplified: The building you see in the photo is the new 7 World Trade Center the original 7 World Trade Center was completed in 1987 and destroyed on September 11, 2001 along with the rest of the buildings in the World Trade Center plaza.