I'll be researching, filming new TV shows, and enjoying our Best of Europe in 21 Days tour in the next two months. Each day of my research time I'll be paling around with a local guide. This is my luxury as every minute spent with an expert and translator and friend at my side is filled with learning and insights I wouldn't enjoy otherwise. Anyone can hire local guides to brighten their travels. In Portugal it costs about €100 ($130) to have your own private guide for four hours. Here, my guide Alex is taking me on a little scavenger hunt through Lisbon's castle town (built back when nobles needed a safe place within the castle walls). She's showing me new things I never noticed even after 20 years of visits to Lisbon.