Explore Barcelona at your own pace with the city's official hop-on hop-off tourist bus service.All you've to do is book your pass and board the double-decker bus at any of the East or West Route ...

An Amsterdam sightseeing tourist bus with a panoramic roof offers tourists a hop-on, hop-off service at 12 points of interest. Credit: Alamy IN JUNE MY HUSBAND AND I ARE SPENDING THREE NIGHTS IN ...