Metroplis

Travel Channel stars reveal Rome as you've never seen it before. How did secret ingredients and an ancient recipe build the first metropolis? Also, learn how American GIs helped create an iconic pasta dish.

Travel Channel stars reveal London as you've never seen it. How did a small Roman outpost become the center of the world? See how trains created its signature street food and how caffeine addiction brought about the stock market.

San Francisco boasts some of America's most famous foods and landmarks. Stunning graphics, re-enactments and celebrities reveal how a diverse population overcame disaster to transform a Spanish port into a tech and cultural capital.