San Francisco has its cable cars, London has its red double-decker buses and Lisbon has its trams ... but it also travels by popular attractions, such as St. George's Castle and Alfama.

Both Portugal and Spain are packed with cultural and historical landmarks. In Portugal, Lisbon showcases iconic sites like ...

One word of caution: Lisbon's Tram 28 and the Santa Justa Elevator double as attractions, so expect crowds. For a quicker journey, consider a taxi. Just know that during rush hour, you'll be ...