Bat-Signal Shines In LA In Honour of Batman Star Adam West (bbc.com)
From a BBC report: LA's skyline has been lit up with the Bat-Signal to honour Batman star Adam West, who died last week. Mayor Eric Garcetti and LA Police chief Charlie Beck were expected to be at the public event at City Hall, which started about 21:00 local time (05:00 BST). The signal originated in the DC Comics strip as a sign that the caped crusader was needed to save the day. Animated comedy Family Guy will also honour West this weekend.
Metropolis and Gotham are both New York; just very different (fictional) views of it. "Gotham" is in fact an old term for New York City, dating back to the beginning of the 19th Century. Washington Irving used it in 1807.