One architect from this country designed a the top-heavy Velasca Tower.  In addition to Ernesto Rogers, another architect from this country is constructing the Arizona town of Arcosanti based on his town-planning concept of arcologies.  Another architect from this country designed Tokyo's Kansai International Airport as well as a collaboration with Richard and Sue Rogers, Edmund Happold, and Peter Rice that features an external tubular walkway.  
One architect from this country designed a the top-heavy Velasca Tower.  In addition to Ernesto Rogers, another architect from this country is constructing the Arizona town of Arcosanti based on his town-planning concept of arcologies.  Another architect from this country designed Tokyo's Kansai International Airport as well as a collaboration with Richard and Sue Rogers, Edmund Happold, and Peter Rice that features an external tubular walkway.  For 10 points, name this home country of Paolo Soleri, and the co-architect of the Pompidou Center, Renzo Piano.
One architect from this country designed a the top-heavy Velasca Tower.  
{Italy} <Hart>