Overview: Gwyneth and Mario meet up with architectural legend Frank Gehry for a tour of the Bilbao Guggenheim. Meanwhile, Mark and Claudia head into the woods where they discover the ultimate grilling restaurant. The foursome reunite at the Gehry-designed Marqués de Riscal Hotel and Vineyard in Rioja wine country. Gwyneth and Claudia opt for oppulent spa treatments while Mario and Mark sneak back into Bilbao to spend a boys‘ night out eating and drinking.