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Penobscot Building
PenobscotBldgDetroitsunsetting.jpg
Alternative names City National Bank Building
Penobscot Building - 47 Tower
General information
Type Commercial offices
Location 645 Griswold Street
Detroit, Michigan
Coordinates 42°19′49″N 83°02′51″W / 42.33041°N 83.0475°W / 42.33041; -83.0475Coordinates: 42°19′49″N 83°02′51″W / 42.33041°N 83.0475°W / 42.33041; -83.0475
Construction started 1927
Completed 1928
Owner Triple Group Of Companies
Management Triple Properties Detroit
Height
Antenna spire 202.4 m (664 ft)
Roof 172.2 m (565 ft)
Top floor 159.4 m (523 ft)
Technical details
Floor count above ground: 47
below ground: 2
Floor area 1,258,900 sq ft (116,960 m2)
Lifts/elevators 25
Design and construction
Architect Wirt C. Rowland
SmithGroup
Donaldson and Meier
Greater Penobscot Building
U.S. Historic district
Contributing property
Architectural style Art Deco
Part of Detroit Financial District (ID09001067)
Designated CP December 14, 2009

The Greater Penobscot Building, commonly known as the Penobscot Building, is a class-A office tower in Downtown Detroit, Michigan. The 1928 Art Deco building is located in the heart of the Detroit Financial District. The Penobscot is a hub for the city's wireless Internet zone and fiber-optic network.

Height

Penobscot Building (NBY 23701)
Penobscot Building on a postcard

Upon completion, the Penobscot Building was the eighth-tallest building in the world, the fourth-tallest in America and the tallest outside of New York and Chicago. Rising 566 feet (173 m), the 47-story Penobscot was the tallest building in Michigan from its completion in 1928 until construction of the Renaissance Center hotel tower in 1977. Ally Detroit Center surpassed the Penobscot as the tallest office building in Detroit upon its completion in 1993. The framing elevation drawing of this building shows a height of 562.166 ft (171.348 m) to the highest roof, approximately 565.75 ft (172.44 m) to the parapet wall around the roof, and 654.166 ft (199.390 m) to the top of the warning beacon atop the antenna.

The Penobscot has 45 above-ground floors and two basement levels, for a total floor count of 47. Although the Penobscot Building has more floors than Ally Detroit Center (45 above-ground floors compared to 43 for Ally Detroit Center), the floors and spires of One Detroit are taller, with its roof sitting roughly 60 ft (18 m) higher than that of the Penobscot.

Name origin

The building is named for the Penobscot, a Native American tribe from Maine. Native American motifs in art deco style ornamentation is used on the exterior and the interiors. The following version of the choice of the name of the building is found in an undated publication believed to have been published concurrent with the buildings dedication in 1928:

An intimation of the Murphy family's early history, together with the expression of genuine sentiment regarding the beginnings of the Murphy fortune, is contained in the name of the Greater Penobscot Building...... Long before the Civil War days, Simon J. Murphy and his partner, then two lads who had grown up in the Maine woods obtained their first employment in one of the logging camps along the Penobscot River - a stream named for the powerful tribe of Penobscot Indians.

Architecture

The architect Wirt C. Rowland, of the prominent Smith Hinchman & Grylls firm based in Detroit, designed the Penobscot in an elaborate Art Deco style in 1928. Clad in Indiana Limestone with a granite base, it rises like a sheer cliff for thirty stories, then has a series of setbacks culminating in a red neon beacon tower. Like many of the city's other Roaring Twenties buildings, it displays Art Deco influences, including its "H" shape (designed to allow maximum sunlight into the building) and the sculptural setbacks that cause the upper floors to progressively "erode".

The opulent Penobscot is one of many buildings in Detroit that features architectural sculpture by Corrado Parducci. The ornamentation includes American Indian motifs, particularly in the entrance archway and in metalwork found in the lobby. At night, the building's upper floors are lit in floodlight fashion, topped with a red sphere.

The building's architect, Wirt C. Rowland, also designed other Detroit skyscrapers, such as the Guardian Building and the Buhl Building, in the same decade.

Penobscot Block

The tower is also connected to two older and smaller buildings, the 1905 Penobscot Building and the Penobscot Building Annex (1916). Together, the buildings comprise the Penobscot Block, located at Griswold Street and West Fort Street. The Greater Penobscot was the last portion of the complex to be developed.

Events

On holidays, both the Penobscot Building and the nearby One Woodward Avenue light-up for the night, with red, white and blue for Independence Day and Canada Day; and red, white and green for the Christmas season. In addition, during the Christmas season, the Penobscot Building's radio broadcast tower is illuminated bright gold, to resemble a giant glowing Christmas tree topped with a flashing red beacon. The Penobscot Building has become a souvenir item along with other Detroit skyscrapers.

The first televisions in Michigan were sold in the retail space on the Griswold level of this building.

For a period of time in the late 1970s and early 1980s, it was renamed the City National Bank Building, after its major tenant. When City National was acquired by another bank and renamed, the historic Penobscot name was revived.

Landmark

The Penobscot Building is a contributing property in the Detroit Financial Historic District, and on the National Register of Historic Places.

Tenants

  • The Caucus Club, a restaurant known for hosting influential business officials, was located in Penobscot from 1952 until 2012. On October 4, 2012, the restaurant announced that it would close by the end of that month. Early in her career, Barbra Streisand appeared as one of the lounge singers at the Caucus Club in 1961. Caucus Club reopened under new ownership in 2017, after an extensive renovation.
  • The tower apex once had "CNB" signs for a local bank that was formerly headquartered in the Penobscot Building.
  • For approximately 20 years ending in 2009, the building was home to radio station WJLB and its well-known 80s DJ, The Electrifying Mojo, who broadcast his nightly visits over Detroit from his 'Mothership'. The Electrifying Mojo is credited with exposing many Detroit Techno musicians to new audiences through his broadcasts.
  • The Smart Detroit Conference Center occupies space on the 13th floor, and includes Class A conference, meeting, or convention space.
  • The Wayne County Friend of the Court occupies floors between the sub-basement and eighth floor, making it the current largest tenant of the building.

Gallery

Architectural details by Corrado Parducci
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