Moonraker filmed at Ca' Rezzonico, Venice. The palatial interior used for Drax's laboratory is this 18th-century palazzo, now a museum. On screen it's Drax's laboratory.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Planning the trip? The Italy travel atlas covers money, language and getting aroundand everything filmed in Venice is on one page
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Venice and it tells you what was shot around you, how to get there, and whether you can actually go in.
Download Venture for iOS Android