hyatt regency hotel

The sculpture, which is a  a 40-foot high geodesic sphere, stands in the Hyatt Regency's atrium lobby.

The lobby itself is also famous for its architecture, designed by John Portman: each successive floor streches further and further into the atrium. This makes the upper floors look like they are just floating over the atrium without any support. It's similar to the interior of the Hotel Luxor (a pyramid) in Las Vegas.