Yes, you can shower at Barcelona-El Prat Airport (BCN), but the facilities are located in specific areas and generally require a fee. The primary location is the "Sleep&Fly" (Air Rooms) facility situated in the public area of Terminal 1, Floor 1. This service is available 24/7 and offers "shower-only" packages that include a shower kit, towels, and toiletries, making it ideal for passengers on long layovers or those arriving early for a flight. Additionally, travelers with access to VIP Lounges, such as the Pau Casals or Joan Miró lounges in Terminal 1 and the Canudas lounge in Terminal 2, can often find shower facilities included as a premium amenity. If you are not a lounge member, you can often purchase a day pass to these lounges. For those seeking the most professional and private experience, booking an Air Room for a few hours is the most reliable option, as it provides a dedicated private space to freshen up, complete with a bathrobe and slippers, separate from the standard airport terminal environment.