Box 25 (Spanish: Caja 25) is a 2015 Panamanian documentary film directed by Mercedes Arias and Delfina Vidal. The film is about letters that were written by the men who built the Panama Canal.
It was originally reported to be the Panamanian entry for the Best Foreign Language Film at the 88th Academy Awards. However, when the final list was announced by the Academy, the film was not included.
The four-part series with its "then and now" format blends first generation archival film with current HD footage of the buildings, monuments and bunkers as they were during the Third Reich and as they appear today.