1201 North Market Street Building vs 7 World Trade Center

Comparing the 1201 North Market Street Building and the 7 World Trade Center is compelling because they were both designed by Skidmore, Owings & Merrill, yet they stand in different cities (Wilmington, DE and New York, NY), and were completed a decade apart.

What this will allow us to see, is how the same firm's approach adapted to different places in different periods of time.

The 7 World Trade Center is clearly the larger tower of the two, both in terms of height and number of floors. It rises to 741ft (226m) with 51 floors above ground, while the 1201 North Market Street Building reaches 361ft (110m) with 23 floors above ground.

Of course, each project may have faced different briefs or regulatory constraints, which we don't really know about and could also explain the outcome.

The 1201 North Market Street Building was designed in the Modern style, while the 7 World Trade Center reflects the principles of Contemporary.

The 1201 North Market Street Building represents a late expression of the Modern, a style already in decline in 1988 when it was completed. By contrast, the 7 World Trade Center followed the then mainstream Contemporary, embodying the dominant architectural direction of its time.

Both the 1201 North Market Street Building and the 7 World Trade Center were designed to serve as commercial towers, and that has remained their main use since their completion, serving similar roles in the urban fabric.

The 1201 North Market Street Building also provides 475 parking spaces.

The two towers rely on different structural systems, reflecting distinct engineering strategies.

The 1201 North Market Street Building uses a Framed Tube In Tube structural system, which combines a strong central core with a perimeter tube of columns, while the 7 World Trade Center uses a Frame system, that relies on a regular grid of columns and beams to sustain its weight.

Yet, when it comes to their facade, they both employed the same solution, a Curtain Wall facade.

A curtain wall is a non-load-bearing facade hung from the structural frame. It is anchored to floor slabs and transfers only its own weight and wind loads, allowing for sleek, glassy exteriors.