Premise: 1/12 Top 12 cities for exploring on foot Wandering around is by far the best way to get your bearings in a new city, not to mention the cheapest. The Lonely Planet has come up with a list of the world's best cities for walking - as voted by its readers. 12. Sydney A trip to Sydney is not complete without a stroll over the famous harbour bridge. It's also an easy walk to the opera house at circular quay, then up through the Royal Botanic Gardnens and into the heart of the shopping and business district. Getty Images
Hypothesis: The most expensive way to explore the top 12 cities is to explore on foot.