One of the most prominent decisions in which the LPC was involved was the preservation of the Grand Central Terminal with the assistance of Jacqueline Kennedy Onassis. In 1978, the United States Supreme Court upheld the law in "Penn Central Transportation Co., et al. v. New York City, et al.", stopping the Penn Central Railroad from altering the structure and placing a large office tower above it. This success is often cited as significant due to the LPC's origins following the destruction of Pennsylvania Station, referred to by some as architectural vandalism.