The founder of a food-tour company tells us in delicious detail about some of his favorite eats to enjoy on the streets of Rome. Then a British tour guide shares how to take in London's historic core as well as its changing landscape on a visit to the boroughs of The City and Westminster. And a tour guide from Lisbon illuminates the contrasts between Portugal's bustling cities and the more traditional way of life that persists in the countryside.

• Kenny Dunn, Rome-based founder of Eating Europe food tours
• Deborah Heyburn, London tour guide
• Adriana Madeira, tour guide from Portugal

• Kenny Dunn is the founder of Eating Europe, which offers food tours in more than 20 major cities in Europe. He offers food guides to European cities, and a list of the top foods to try in each one of them, on the Eating Europe website.
• The Rick Steves online guide to London includes Rick's free audio walking tours for the British Museum, historic London, St. Paul's Cathedral, and Westminster.
• Transport for London has information about Thames River boat cruises.
• The Garden at 120 Fenchurch Street is one of London's largest free public rooftop viewing spaces, with 360-degree views.
• Deborah Heyburn specializes in custom tours of southwest England from her home base in London, and can be e-mailed at [email protected].
• The Rick Steves online guide to Portugal includes a free audio walking tour and map of Lisbon.
• Adriana Maderia posts photos from her tours in Portugal on Instagram.