Throughout this five-hour bike tour, starting in Bilbao, discover the maritime and industrial history of the villas. Explore the iron mines and learn about the way the citizens were able to transform the natural landscape into a place worth admiring. Begin your trip by visiting the new icons of the city, including the Guggenheim Museum, Euskalduna Congress Palace, and the Maritime Museum. Continue pedaling along the left bank of the estuary until it joins the open sea.  The Pendant or Bizkaia Bridge, which was declared a Unesco World Heritage Site in 2006, links the Portugalete's Villa with Getxo. Once there, continue to The Gold Mile of Biscay, among the outstanding palaces built by the aristocracy at the beginning of the 20th-century. Visit the Sailing Club and Ereaga beach. End your journey in the quaint and picturesque Alcorta's Old Port.