Cuban customs is for processing foreigners wanting to enter Cuba. The Cuban clerk is employed here. Visitors must fill out forms explaining why they are visiting. Possible reasons include "Business/Pleasure", "Smuggle Cigars", and "Assassinate Castro". Homer Simpson, Charles Montgomery Burns, and Waylon Smithers, Jr. visit this location.
Another time the Simpsons go through it when they take a ferry to Havana so Grampa can receive less expensive medical services.