Type to search buildings, cities, countries, firms, glossary terms, news and future projects.
2026 EDITION
THERE IS MORE THAN ONE WAY TO MEASURE A TOWER
Beyond architectural height
23 documented measurements in seven categories, plus 14 sourced structural descriptions. These are selected comparisons, not exhaustive world rankings. Measurement boundaries matter as much as the numbers.
Elevator ascent speed
Source selection checked 3 October 2026 (2026-10-03)
At the Top SKY terrace. This is a particular visitor deck, not the building’s occupied-floor or lounge height.At the Top ↗ · Undated operator page; checked 2026-10-03
Operator-reported 1,250 ft observation level. Visitor and architectural endpoints are distinct categories.Empire State Building ↗ · Undated project page; checked 2026-10-03
Project engineer reports a width-to-height ratio of 1:15, shown here as height to width.schlaich bergermann partner ↗ · Undated project page; checked 2026-10-03
Highest occupied floor
Source selection checked 3 October 2026 (2026-10-03)
Owner-reported foundation depth below ground for the twin-tower project. Not the length of every foundation element.PETRONAS ↗ · Undated project page; checked 2026-10-03
Pile length, not depth below street level. The owner also gives a 3.7 m mat. Datum differs from below-ground depth.Emaar ↗ · Undated project page; checked 2026-10-03
Reported gross floor areas
Tower-only, podium-inclusive and project-wide areas are not directly comparable. Read each row's area boundary before comparing size.
Source selection checked 3 October 2026 (2026-10-03)
SOM project fact: building gross area. The project includes a retail structure; source does not isolate tower-only area.SOM ↗ · Undated project page; checked 2026-10-03
SOM project fact: building gross area. Includes a development with a six-story podium; not a confirmed tower-only total.SOM ↗ · Undated project page; checked 2026-10-03
Tower gross construction area in the design director’s portfolio; retail podium is separately listed.Efficiency Lab, Aybars Asci portfolio ↗ · Undated project page; checked 2026-10-03
Engineer-reported office-tower area. Source includes two underground parking levels without a separate area breakdown.LERA ↗ · Undated project page; checked 2026-10-03
Construction periods
Start, topping out, completion and opening are different endpoints. Rounded year differences cannot identify the fastest construction project.
Source selection checked 3 October 2026 (2026-10-03)
Calendar-year difference: 2014 start to 2023 recorded completion. Rounded years, not an exact elapsed duration. Start and completion evidence are in the profile.Directory field sources ↗ · Record updated 2026-09-24
Calendar-year difference: 2008 start to 2015 recorded completion. Rounded years, not an exact elapsed duration. Start and completion evidence are in the profile.Directory field sources ↗ · Record updated 2026-09-24
Owner-reported foundations-to-opening period for the joint development. Opening differs from structural completion.PETRONAS ↗ · Undated project page; checked 2026-10-03
Calendar-year difference: 2004 start to 2010 recorded completion. Rounded years, not an exact elapsed duration. Start and completion evidence are in the profile.Directory field sources ↗ · Record updated 2026-09-24
410 days, converted to years using 365.2425 days/year. Owner-reported construction period, 1930 to 1931.Empire State Building ↗ · Undated project page; checked 2026-10-03
Structural systems
Grouped by a prominent structural feature. Real towers can combine several systems; these families are navigation aids, not mutually exclusive engineering classifications.
Composite frame with diagonalized and vertical zonesProject evidence ↗ · checked 2026-10-03
Unknown measurements are excluded, not treated as zero. Elevator maxima do not describe average trip speed or waiting time. Slenderness follows each source's width definition. Proposed equipment is excluded. Explore the engineering lab ↗ · Explore project teams ↗