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828 metres. Burj Khalifa still leads the world.
Explore the extraordinary buildings that define our skylines, ranked by architectural height. [1]
WORLD NO. 01
Completed. Measured. Compared.
Architectural height, including spires. [1]
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100 sourced completed-building records. The top ten have expanded engineering dossiers; additional records include source and review notes. Heights may differ from other lists where sources use different precision or completion milestones. Scope & source policy ↗
A spire can change a ranking. A different measuring point can change an answer. See how these buildings compare on the same scale.
Compare buildings ↗Pick a building and a way up. Elevator runs use an ideal speed profile from the site’s travel model; stairs assume a steady vertical climb; the drop ignores air resistance. All are educational approximations — not a safety or performance guide.
An elevator at 10 m/s with a 1.1 m/s² acceleration limit.
Elevator: rest-to-rest kinematics with equal acceleration and braking (jerk, doors, levelling and queues excluded). Stairs: a sustained 0.8 m/s vertical rate including slack — real tall-tower climbs take far longer. Drop: free-fall time √(2h/g) with 9.81 m/s², ignoring drag and terminal velocity. Heights use the building’s architectural height.
SOM, KPF, Gensler, Fender Katsalidis and the teams behind these ten landmarks.
Meet the designers ↗02 / CONSTRUCTION FIRMSExplore the contractors responsible for turning ambitious structural designs into buildings.
Meet the builders ↗03 / THE NEXT CHAPTERSee buildings under construction and the concepts pushing beyond today’s skyline.
Explore future buildings ↗Explore 104 completed, under-construction and concept projects by city, country and status.
02 / INSIDE A TOWERAnnotated core, outrigger, floor, elevator and foundation diagrams with ten project case studies.
03 / HEIGHT RECORDSFollow the record from 1908 to today with an interactive year selector.
04 / CONSTRUCTION TRACKERDated milestones, contracts and engineering updates for the next generation.
The 40 cities that hold the world's 100 tallest buildings, from Dubai to New York City.
02 / BY COUNTRYHow the top 100 is distributed across 13 countries, led by China and the United States.
03 / BY YEAREvery completion year in the ranking, and how much taller new entries have become.
04 / BY TYPERank the tallest office, mixed-use, residential and hotel towers side by side.
How do you deliver a reliable shower hundreds of metres above the street, then safely remove the wastewater? An engineering guide to the water systems hidden inside tall buildings, with worked calculations and practical design tradeoffs.
Read the deep dive ↗How material properties, load paths and construction decisions shape the steel inside a supertall building.
Read the deep dive ↗The mechanics and traffic engineering that make hundreds of occupied floors usable, from traction ropes to destination dispatch.
Read the deep dive ↗Piles, rafts, groundwater and settlement: why the most important part of a skyscraper may be the part you never see.
Read the deep dive ↗The Jersey City tower required close coordination of structural supports, equipment openings and facade joints.
The Brussels project combines retained structures with new mixed uses.
The engineer reports topping-out while completion remains targeted for late 2027.
Dates refer to the source events. Curated reporting reviewed 2026-11-06.
Burj Khalifa in Dubai is the world's tallest completed building at 828 metres architectural height. It was completed in 2010 and still holds the record.
Yes. The ranking measures to the architectural top, including permanent spires but excluding antennas and other functional equipment.
A completed building must be topped out, fully clad and at least partly occupiable. Towers enter this list only after meeting those criteria.
At least half of the height must be occupiable. Broadcast masts and observation towers do not meet that definition and are excluded from the ranking.
Change wind, damping, elevator demand and zoning. See the model respond.
Documented elevator speeds, observation decks, occupied floors and slenderness.
Trace the designs, engineering and decisions behind cancelled megatowers.
Official ticket links, accessibility information and photography notes.
Keep a shortlist, compare favourites and export your collection.
Each week’s sourced news in one edition, available on the web and through RSS.
Choose up to ten towers, put them on one height scale and download a poster.
FILTER & COMPAREExplore lifts, foundations, floor areas, construction periods and structural systems.
KEEP UPCollect news, milestones and corrections, and mark what you have reviewed.
MOVE THE YEAR SLIDERWatch selected buildings appear and disappear as you move through a city’s history.
FOLLOW THE CREDITSFind the architects, engineers and builders credited on the same projects.
DATED PHOTO HISTORIESCompare licensed construction photographs with dates, credits and milestone context.
REUSE & RETROFITSInvestigate four cases in energy, facade refurbishment and structural reuse.
TEST YOUR KNOWLEDGERecognise silhouettes, estimate heights and work through engineering questions.
