Megamansions, Tower of Voices

As LA homes get smaller they are also getting bigger. Can they keep on growing? DnA explores large luxury houses, and finds out who is building them, who is buying them -- and why amenities matter. Plus, Tower of Voices in Pennsylvannia memorializes, with wind and chimes, those who went down with a fight on United Flight 93.

Host Frances Anderton looks at design and architecture from a Los Angeles perspective.