Burj Khalifa: overview, design, history and significance

History and construction

The project was announced as part of a larger development on a mixed-use site along Sheikh Zayed Road; before inauguration it was referred to as Burj Dubai. Groundworks and piling began in the first half of the 2000s and formal construction started in 2004, culminating in an official opening in January 2010 after nearly six years of work. Multiple international contractors were involved during construction and the overall cost has been reported at roughly US$1.5 billion, while additional investment supported the surrounding district and infrastructure.

Design and engineering

The tower was primarily designed by architect Adrian Smith during his tenure with Skidmore, Owings & Merrill. The form uses a bundled, setback arrangement inspired by traditional Islamic architecture, adapted with modern reinforced concrete and steel systems to achieve tremendous height while resisting wind and seismic forces. Its tapered silhouette and stepped terraces reduce wind loads and provide outdoor observation spaces at multiple levels.

Characteristics and features

Reported official height is 828 metres (2,717 feet). Depending on counting methods, the number of floors is typically described as around 162–163, with several mechanical levels and rooftop structures. The building contains offices, residential units, a luxury hotel, observation decks and service floors. High-speed elevators and extensive mechanical systems support vertical circulation, fire safety and environmental control. For scale, the Burj Khalifa rises more than 300 metres above the former tallest skyscraper, Taipei 101, illustrating the leap in vertical construction that it represents.

Uses, context and importance

Beyond housing and hospitality, the tower acts as an anchor for Downtown Burj Khalifa, a neighbourhood of retail, leisure and cultural amenities. Its prominence has economic and symbolic value: it attracts tourists, supports premium real estate, and signals Dubai's ambitions in global commerce and urban design. The building has hosted public events, seasonal light shows and special ceremonies that reinforce its role as a civic landmark.

Notable facts

• The project's international collaboration included design, engineering and construction firms from several countries and reflected contemporary large-scale construction practices.
• The structure's form and materials were chosen to balance height with wind performance and buildability.
• Its opening completed a multi-phase urban project along Sheikh Zayed Road and helped catalyse further development in the area.
• Common references and technical discussions about the tower often cite its Arabic name برج خليفة and its earlier working name Burj Dubai.
• For additional context on technical, cultural and historical aspects, see architect biographies and engineering case studies linked from authoritative sources (Adrian Smith, design documents, and project reports on construction and execution).

The Burj Khalifa remains a frequently cited example in discussions of tall building design, urban branding and contemporary construction capability, notable both for its dimensions and for the complex programme it accommodates. Further reading can explore its structural system, materials, sustainability measures and the development of the surrounding district.