Research Record
Updated 2026
500 North Michigan Avenue, Chicago
The 24-story tower will keep ground-floor retail while vacant offices become housing and a new rooftop level changes the building's original profile.
Public Research
Chicago's designation of Calumet-Giles-Prairie District makes it easier to study street layout and parcel rhythm, contributing buildings and shared fabric, and district-scale preservation decisions together rather than one address at a time.
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Why It Matters
Calumet-Giles-Prairie District protects a frame large enough for street layout and parcel rhythm, contributing buildings and shared fabric, and district-scale preservation decisions to be studied together.
From there, the district can be researched as a living piece of city fabric rather than as a loose collection of attractive buildings.
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Research Narrative
Calumet-Giles-Prairie District is recorded by the city as district number 10. The record anchors the district on July 13, 1988 and pairs that with the extent note Most of Calumet, Giles, and Prairie (300E) Avenues between 31st and 35th streets. Calumet-Giles-Prairie District allows street layout and parcel rhythm, contributing buildings and shared fabric, and district-scale preservation decisions to be studied as part of one protected piece of the city.
Calumet-Giles-Prairie District becomes easier to read on the ground through boundary edges, corner conditions, and setbacks, the cadence between contributing buildings, and later infill, demolition, or alteration. This is usually where the district begins to reveal how a district holds together as a coordinated piece of city fabric rather than as isolated addresses.
Calumet-Giles-Prairie District can be carried further through designation reports and atlases, historic photographs and Sanborn maps, and permit records and planning coverage. That is usually how the district moves from a protected outline into a fuller history of parcels, fabric, and later change.
Calumet-Giles-Prairie District becomes more useful as later fieldwork and source work keep returning to the same district frame.
Public Actions
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Designation
City of Chicago designated Calumet-Giles-Prairie District as landmark district no. 10 on July 13, 1988.
Inventory
Calumet-Giles-Prairie District continues to appear in Chicago's public landmark inventory and mapped district boundary datasets.
Sources
dataset
Use for district names and designation dates in the city data portal.
dataset
Use for district geometry and boundary-level map work.
Place Snapshot
Key Facts
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