SKYDB Building database

Tall buildings worldwide, with heights, construction status and the companies involved.

Rankings of tall buildings

Tall Building Markets

Tall buildings, tracked.

SKYDB is collecting verifiable information about buildings.

Panorama of Pittsburgh File 170-178-595
company #659531369

Longfellow, Alden & Harlow

renamed architect founded 1886

Activity Rankings

Object dataJoin to edit

Status renamed
Rolearchitect
Founded1886
Closed1896
CityPittsburgh, PA
CountryUnited States
Source: SKYDB | As of: 2026-10-29

Location

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Statistics

Buildings by decade

Click any bar to drill into that completion decade.

0 0% 2020s 0 0% 2010s 0 0% 2000s 0 0% 1990s 0 0% 1980s 0 0% 1970s 0 0% 1960s 0 0% 1950s 0 0% 1940s 0 0% 1930s 0 0% 1920s 0 0% 1910s 0 0% 1900s 3 100% Pre-1900 1 not counted No Year

By status

Vision: 1 (25%) Completed: 3 (75%)
  • Vision 1
  • Completed 3

By primary use

residential: 2 (40%) government: 2 (40%) office: 1 (20%)
  • residential 2
  • government 2
  • office 1

By floor count

1-9 floors: 3 (75%) 10-19 floors: 1 (25%)
  • 1-9 floors 3
  • 10-19 floors 1

By height

Under 50 m: 1 (50%) 50-99 m: 1 (50%)
  • Under 50 m 1
  • 50-99 m 1

Source: SKYDB | As of: 2026-10-29

Longfellow, Alden & Harlow Buildings View all

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