By Penny Zibula Photographs by Simon Lock ITWPA Members Madrid can rightfully boast of its abundance of regional and international cuisines. But in the heart of Spain’s capital is a one-of-a-kind eatery that should not be missed. Sobrino de Botin is the oldest working restaurant in the world, according to the Guinness Book of Records. Founded by a French chef in 1725, … [Read more...] about World’s Oldest Working Restaurant: Centuries-Old Charm and Timeless Quality are Botin’s Secret Ingredients for Success