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Olson Kundig installs double-decker elevators at Seattle Space Needle

architecture-design · 2026-05-05

Olson Kundig, an architecture firm based in the U.S., has partnered with Otis Elevators and Sonaca North America to introduce innovative all-glass double-decker elevators in the exposed core of the Seattle Space Needle. This initiative is part of the broader Century Project, enhancing the landmark which previously saw the installation of a revolving glass floor in 2018. The project replaces the old single-cab elevators with contemporary double-cab units, echoing designs from the 1960s. Capable of accommodating 46 passengers and operating at a speed of 800 feet per minute, the elevators are expected to be fully operational by 2028.

Key facts

  • Olson Kundig and Otis Elevators installed all-glass double-decker elevators at the Seattle Space Needle.
  • The elevators replace three single-cab machines with double-cab designs.
  • The design was informed by original 1960s drawings by John Graham & Company.
  • The elevators are bookended with curved golden-metal caps and have floor-to-ceiling glass.
  • It is the only tower in the world with double-deck, all-glass, outdoor elevators.
  • The elevators carry 46 passengers at 800 feet per minute.
  • The project is part of the Century Project modernization, which included a revolving glass floor in 2018.
  • The first cab was installed late last year; the other two open in 2027 and 2028.

Entities

Artists

  • Alan Maskin
  • Blair Payson

Institutions

  • Olson Kundig
  • Otis Elevators
  • Sonaca North America
  • Green Facades
  • John Graham & Company
  • Space Needle
  • Dezeen

Locations

  • Seattle
  • United States

Sources