Megamansions, Tower of Voices

Published: Sept. 11, 2018, 9 p.m.

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.