Limits RegistryPUBLIC RECORD
Limits RegistryThe Home Insurance Building in Chicago, completed in 1885 and designed by William Le Baron Jenney, is generally credited as the first skyscraper — the first tall building to use a fully self-supporting steel frame rather than load-bearing masonry walls, a structural innovation that made much taller buildings possible. It stood 10 stories (42 m) tall and was demolished in 1931.
The question, scope, and sources behind this Registry record.
The Home Insurance Building in Chicago, completed in 1885 and designed by William Le Baron Jenney, is generally credited as the first skyscraper — the first tall building to use a fully self-supporting steel frame rather than load-bearing masonry walls, a structural innovation that made much taller buildings possible. It stood 10 stories (42 m) tall and was demolished in 1931.
The year of completion of the building generally credited by architectural historians as the first skyscraper, based on its steel-frame structural system.
Change a parameter to stress-test whether a proposed result is still inside the published specification. This is an audit aid, not a proof checker.
This record has no editable parameters. Read the formal question and assumptions before challenging it.
Current frontiers derived from accepted Claims.
An observed or demonstrated result; no opposing bound is implied.
The frontier is not sacred
Most progress starts with a disagreement that survives contact with evidence. If you can push the known lower bound up or pull the upper bound down, show us the work.
≥ when you have shown that at least this value is achievable.≤ when you have shown that anything above this value is impossible.No vibes. State the value, define the scope, and link the paper, proof, code, or reproduction that lets another person check it. Editors review every challenge before the public record changes.
Challenge this recordAssertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.
Permanent ID limitsregistry.com/limits/LR-FIRST-SKYSCRAPER
No active verified bounties are linked to this Limit.
View verified bounty tracker ↗No accepted machine-checked reproductions are recorded for this Limit.
Limits Registry. LR-FIRST-SKYSCRAPER. First skyscraper ever built. 2026.