Hub on Causeway Office Tower vs Millennium Tower

Hub on Causeway Office Tower
Millennium Tower

Comparing the Hub on Causeway Office Tower and the Millennium Tower is interesting because they both rise in Boston, MA, yet they were conceived by two different design teams, Gensler and Handel Architects, and were completed at different points in time. They were finished more than 6 years apart.

This contrast within the same city allows us to see how different creative minds interpreted the evolving needs of Boston across time.

Let's take a closer look!

Height
160m
Floors
31

Height & Size

Height
209m
Floors
60

The Millennium Tower is clearly the larger tower of the two, both in terms of height and number of floors. It rises to 686ft (209m) with 60 floors above ground, while the Hub on Causeway Office Tower reaches 525ft (160m) with 31 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.

Style
Contemporary

Architectural Style

Style
Contemporary

Both the Hub on Causeway Office Tower and the Millennium Tower were designed in line with the aesthetic conventions of the Contemporary style.

At the time, this style was at the height of its popularity. So both Gensler and Handel Architects followed what was in many ways expected of them, producing designs that fit comfortably within contemporary architectural norms, rather than breaking with convention.

Main use
Commercial

Uses

Main use
Residential

The Hub on Causeway Office Tower is primarily commercial, while the Millennium Tower is primarily residential.

The Millennium Tower offers 442 residential units.

Both towers provide significant parking capacity, with Hub on Causeway Office Tower offering 800 spaces and the Millennium Tower offering 550.

Structure
Frame
Facade
Curtain Wall

Structure & Facade

Structure
Frame
Facade
Curtain Wall

Both the Hub on Causeway Office Tower and the Millennium Tower rely on a Frame structural system.

A frame structure uses a grid of columns and beams to carry the building's loads. This frees the walls from structural duties, allowing for flexible floor plans and larger windows.

They also employ the same type of facade, 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.

Hub on Causeway Office Tower Millennium Tower
Gensler Architect Handel Architects
2019 Construction Started 2013
2022 Year Completed 2016
Contemporary Architectural Style Contemporary
Commercial Current Use Residential
31 Floors Above Ground 60
160 m Height (m) 209 m
Frame Structure Type Frame
Steel And Concrete Vertical Structure Material Concrete
Reinforced Concrete Horizontal Structure Material Concrete
No Facade Structural? No
Glass, Steel Main Facade Material Glass
Boston Properties And Delaware North Developer Millennium Partners
Copley Wolff Design Group Landscape Architect Richard Burck Associates
Constantini MEP Engineer Cosentini Associates
Le Messieur Structural Engineer DeSimone Consulting Engineers
MA State MA
Boston City Boston
100 & 120 Causeway Street Address 1 Franklin Street