Eureka is a 2023 drama film co-written and directed by Lisandro Alonso, starring Viggo Mortensen, José María Yazpik and Chiara Mastroianni.

The film's first part, entitled 'Western', takes place in a lawless township on the US-Mexico border in 1870, with Viggo Mortensen playing the role of a father, Murphy, searching for his kidnapped daughter.

[3] In August 2020, the cast of the film, including Viggo Mortensen, Chiara Mastroianni, Maria de Medeiros, Viilbjørk Malling Agger, and others were confirmed.

[23] David Katz, reviewing for Cineuropa praised the film, writing "Eureka is a heady, thought-provoking, and often beautiful experience—artistic minimalism at its most elasticated and textured.

Bradshaw rated the film 4 stars out of 5 and wrote, "It is entirely fascinating, though undoubtedly it requires the audience to recalibrate their own consumption-tempo and attention span stamina.