Groundscraper

A groundscraper is a large building that has relatively few stories but which greatly extends horizontally.

Definition
Encarta defines groundscraper as "a large low or medium-rise building, typically containing offices, that spreads horizontally and occupies a large amount of land".

Examples

 * 5 Broadgate, a groundscaper owned by Swiss bank UBS, was once the largest office building in the City of London.
 * Horizontal Skyscraper – Vanke Center in Shenzhen is as large as the Empire State Building, but is laid out horizontally and five stories above ground level. A park occupies the space below.
 * The Pentagon – the world's second largest office building
 * Apple Park
 * Bharat Mandapam
 * The Squaire
 * Colossus of Prora, originally 4.5 km (2.8 mi) in length.
 * Estonian National Museum
 * SAS Frösundavik Office Building
 * The klystron gallery at the SLAC National Accelerator Laboratory is 3 kilometers long and 1 story high.
 * Each arm of the LIGO gravitational wave detectors is 4 kilometers long and housed in an above-ground concrete structure.