The old city wall is still intact, and you can walk all the way around or rent a bike to explore it.

古城墙仍然保存得很完整，你可以步行或租辆自行车去那儿探探险。

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To truly experience Shanghai, one must explore all its sides. The beauty of the city lies in its old and new, West and East.

要真正体验上海，就要探索她多姿多彩的各个层面上海的美，在与她的新与旧，东西方的文化汇聚于一身。

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In Bulgaria, you can explore the old churches the capital city, Sofia, such as Cathedral Saint Alexandar Nevski.

在保加利亚，您可以在首都索非亚探索古老的教堂，比如亚历山大·涅夫斯基大教堂等。

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The faded glories of Old Havana are best appreciated on foot, but to fully explore the city, and after nightfall in some of the sketchier areas, you're better off taking a taxi.

CNN: An insider's guide to Havana

For travellers staying in the city centre, the train makes it possible to explore the old guard of sights and the suburbs, where many of the coolest lounges, restaurants and shops have opened up in recent years.

BBC: Riding the rails like a Mumbaiker