Artist Maya Lin will appear in St. Louis Wednesday for the unveiling of the new reflecting pool and plaza at the BJC Institute of Health. Lin is best known for designing the Vietnam Veteran’s Memorial in Washington, D.C. Lin’s plaza boasts some 40,000 native trees, grasses and plants and walking paths covered with exposed aggregate concrete and decomposed granite. The reflecting pool is 80 feet wide with a raised platform that features fiber-0ptic lighting designed to look like twinkling stars. The 680,000 square-foot BJC Institute of Health, located at Euclid Avenue and Children’s Place, is an 11-story research building housing laboratories and support facilities for BioMed 21, Washington University’s research initiative to translate basic research findings into new medical treatments. The building cost $235 million.