"Unbuilt Washington."

The ziggurat that might have been the Lincoln Monument, the gigantic enlargement of the White House, the Kennedy Center that looks like Monona Terrace, the National Sofa... yes, the National Sofa:

In response to the closing of Pennsylvania Avenue — the first of many hysterical security measures since the Oklahoma City bombing and the attacks of Sept. 11, 2001 — Allegro and Michel envisioned a wide, arching “sofa” in front of the White House, with a giant video screen giving visitors an insider’s peek into the executive mansion.