World Trade Center Memorial, 2:
design competition finalist:
Passages of Light: The Memorial Cloud
by bbc art + architecture -
Gisela Baurmann, Sawad Brooks, Jonas Coersmeier

text - page 1 - page 3 - page 4
At street level, the open space is covered by a translucent surface (above), the top of a "cloud" formed from 10,000 vertical conduits for light. This cloud would hang over an underground level (below), where victim's names would be engraved within circles of light (left).
WTC Memorial: text - page 1 - page 2 - page 3 - page 4
source: Imagining Ground Zero: Official and Unofficial Proposals for the World Trade Center Site, by Suzanne Stephens with Ian Luna and Ron Broadhurst. Architectural Record / Rizzoli, 2004.