Inside the custom-built Douro Valley wine region cruise ship - and how it gets through the largest lock in Europe - revealed in new Daily Mail documentary

The Daily Mail's latest episode of Ship Shape delves into the unique experience of cruising aboard the custom-built MS Estrela in Portugal's Douro Valley, a renowned wine region. This journey highlights the ship's passage through the Cacela lock, Europe's largest, showcasing the engineering marvel required to navigate such tight spaces. The documentary not only provides a fascinating look at the luxurious cruise experience but also underscores the importance of Portugal's Douro Valley as a premier destination for wine enthusiasts, highlighting its cultural and economic significance.