Mario, Gwyneth, Mark and Claudia end their epic road trip in Madrid. They have a full plate of activities lined up: lunch with the world's most famous chef, an architectural tour of modern Madrid with a few palaces and some history thrown in, a quick appearance at a Real Madrid soccer match, madrileno nightlife and cocido madrileno, a delectable hangover cure. The series concludes with a no-holds-barred, road trip team vs. road trip team kitchen battle.