In several episodes, the rainy Metropolis view that is shown is actually a scene from Batman Begins (2005). It's a view of The Narrows and Arkham Asylum with surrounding Gotham in the background. The scene can be found at the beginning of the 'Lighten Up' chapter.
"What matters is that I can see Gotham from my new office, and you... oh, well, you, hon, you work below sea level."- Linda Lake says this to Chloe. This is one of the only other mentions to Gotham other than Geoffrey in episode Reunion mentions getting back home to Gotham. This is also a reference to the super hero Batman who's home is Gotham and protects it like Oliver Queen does in Metropolis.
Linda was caught in the 2005 meteor shower that bombarded Smallville, when her news van crashed into Crater Lake. She wrote the "Daily Dish" gossip column and used her meteor powers to transform herself into water in order to obtain inside or personal information for her column.