Date Achieved: December 15, 2001

Who/Which: Hyatt Regency

What: 350 Ft. x 160 Ft.

Description: The lobby at the Hyatt Regency in San Francisco, California, USA is 107 m. (350 ft.) long and 49 m. (160 ft.) wide; 52 m. (170 ft.) is the height of a 17-storey building.

Place: San Francisco, California, United States

Source: http://www.guinnessworldrecords.com/