If passing through Singapore's Changi Airport and you have five hours or more between flights, you can have a FREE tour of Singapore. Just look for the Free Tour Desks and sign up. They take you on a quick coach tour into the centre - you get a short trip on a "bum boat" as well - and bring you back to the departures lounge. Its easy to do and its free!
Singapore Changi Airport
www.changi.airport.com.sg
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