Cillian Murphy and Daniel Craig filming

The currently unnamed film is being shot at several historic locations, which has reportedly led to some friction with local tourists who have been restricted from popular attractions.

Murphy and Craig were seen showcasing their toned physiques during a scene filmed on a Greek beach, drawing a crowd of onlookers.

Chazelle, known for 'La La Land' and 'Whiplash,' is said to be aiming for a gritty, realistic tone for the production.

The film is one of several high-profile Hollywood projects currently utilizing Greece's diverse landscapes and generous filming incentives.