Moscow is a capital and the largest city in Russia. It appears in 1968 Godzilla film, Destroy All Monsters.
History
Showa era
Destroy All Monsters
Rodan attacking Moscow in Destroy All Monsters
After the Kilaaks invade Monsterland and take control of monsters' minds, they send Rodan to attack Moscow.
TriStar series
Godzilla: The Series
In the Monster Wars Trilogy, the Tachyon Aliens send the mind-controlled Godzilla, Cyber-Godzilla and several of Godzilla's previously defeated foes they had recovered to attack major cities around the world and force humanity to deplete their weaponry in preparation for the Tachyon's invasion force. Two of Godzilla's enemies, El Gusano Gigante and the Giant Mutant Bee, are sent to attack Moscow. Both monsters are killed when they revolt against their alien masters.
MonsterVerse
Godzilla: King of the Monsters
Moscow was mentioned as a city that came under Titan attack during King Ghidorah’s global reign of terror as the Titans' new pack alpha. The Titan who attacked Moscow, however, is unidentified, but unlikely to be Amhuluk due to Admiral William Stenz indicating the attack is ongoing while Monarch's digital world maps indicate Amhuluk is far away from the city's location.