ST. LOUIS – The lights will come back on at the Gateway Arch on Monday.
The lights have been turned off for the last two weeks to avoid disturbing migratory birds flying south over the winter. Parks Service officials said many bird species use the Mississippi River to mark their flight path.
This happens every spring and fall during bird migration.
https://fox2now.com/news/missouri/gateway-arch-lights-are-back-on-monday-oct-3/ The lights on the Gateway Arch are back on Monday 3rd October