Memorial Proposals for the WTC Site   Below, the eight finalists and their visions of remembrance. The designs will be on display at The Winter Garden until a decision is reached. The Winter Garden is open to the public from 7 a.m. to 11 p.m. daily.         Votives in Suspension Architect: Norman Lee and Michael Lewis. Lower Waters Architect: Bradley Campbell and Matthias Neumann. Passages of Light: Memorial Cloud Architect: bbc art + architecture. Suspending Memory Architect: Joseph Karadin with Hsin-Yi Wu. Garden of Lights Architect: Pierre David with Sean Corriel, Jessica Kmetovic. Reflecting Absence Michael Arad.   Dual Memory Architect: Brian Strawn and Karla Sierralta. Inversion of Light Architect: Toshio Sasaki.