It may be one of the darkest weeks of the year, but the Gateway Arch is about to shine more brightly than ever. That’s thanks to a newly updated lighting system that the Gateway Foundation promises is not only more efficient, but also better illuminates the 630-foot stainless steel monument. And because the new system reduces the light being beamed into the night sky, it’s better for the migratory birds who frequently pass through St. Louis skies (and even trigger semi-regular Arch blackouts).