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Ally Detroit Center
Alternative names Comerica Tower
500 Woodward Avenue
General information
Status Complete
Type Commercial offices
Architectural style Postmodern
Location 500 Woodward Avenue
Detroit, Michigan
Coordinates 42°19′48″N 83°02′42″W / 42.330°N 83.045°W / 42.330; -83.045
Construction started 1991
Completed 1993
Antenna spire 188.7 m (619 ft)
Roof 184.9 m (607 ft)
Top floor 176.2 m (578 ft)
Technical details
Floor count 43
2 below ground
Floor area 1,674,700 sq ft (155,580 m2)
Lifts/elevators 22
Design and construction
Architect Philip Johnson
John Burgee
Developer Hines Interests
Main contractor Walbridge Aldinger Company

Ally Detroit Center, formerly One Detroit Center, is a skyscraper and class-A office building located in Downtown Detroit, overlooking the Detroit Financial District. Rising 619 feet (189 m), the 43-story tower is the tallest office building in Michigan and the second tallest building overall in the state behind the central hotel tower of the Renaissance Center, located a few blocks away. Although the Penobscot Building has more floors above ground (45), those of Ally Detroit Center are taller, with its roof sitting roughly 60 feet (18 m) taller than that of the Penobscot. It has a floor area of 1,674,708 sq ft (155,585.5 m2).


Ally Detroit Center from Jefferson Avenue

The building was designed by noted architects John Burgee & Philip Johnson, partners influential in postmodern architecture. Ally Detroit Center was constructed from 1991 to 1993. It houses numerous tenants, including many prominent Detroit law firms and PricewaterhouseCoopers. In addition to retail, the building also contains a restaurant and a gym.

The building is famous for its postmodern architectural design topped with Flemish-inspired neo-gothic spires which blend architecturally with the city's historic skyline. It is constructed mainly of granite. Sometimes called a "twin gothic structure", for its pairs of spires, it is oriented North-South and East-West (as named on a plaque along the Windsor waterfront park). Ally Detroit Center won an Award of Excellence for its design in 1996. Ally Detroit Center replicas have become a souvenir item along with those of other Detroit skyscrapers.

Project plans for a twin tower directly to the east, Two Detroit Center, were placed indefinitely on hold. Two Detroit Center parking garage was constructed on the site in 2002.


The law firm Dickinson Wright (formerly Dickinson, Wright, Moon, Van Dusen & Freeman) has its headquarters in Ally Detroit Center. The company moved into the building when it opened in 1992. In 2007, when it renewed its lease, the company occupied almost 100,000 square feet (9,300 m2) of space in the building. Additionally, the international law firm of Clark Hill, PLC operates its headquarters on three floors of the building.

The building was previously occupied by Comerica Bank. In efforts to expand its U.S. presence, the bank has engaged in a succession of takeovers in Texas, Florida, Arizona, and California. The bank's lease on Comerica Tower at Detroit Center ran through 2012. Comerica is a major sponsor of Comerica Park, the home of the Detroit Tigers baseball team. In December 2009, tenant Comerica announced it would vacate Ally Detroit Center by 2012, consolidating its Michigan operations at 411 West Lafayette Boulevard.

In March 2015, following the purchase of the building by Dan Gilbert through his Bedrock Real Estate Services, Bedrock and Ally Financial announced a 12-year lease under which it would move its main office into the building from the nearby Renaissance Center as well consolidate all employees in suburban Detroit to the building, occupying 20 floors or approximately 321,000 square feet (29,800 m2). The tower was renamed Ally Detroit Center.


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