But for a uniquely Cambodian experience, the prize goes to the cyclo tours of the city centre.

BBC: Phnom Penh��s fast-fading architectural treasures

Leaning back in the cyclo, moving at a stately pace, makes it easy to appreciate the aesthetic attractions of the city.

BBC: Phnom Penh��s fast-fading architectural treasures

But most people, from cyclo drivers to billiard players, were more excited about the city's new tourism drive, launched this month.

CNN: Stops and Starts

Once the main form of public transport in Phnom Penh, the cyclo is getting gradually pushed out by cars, motorbikes and tuk-tuks.

BBC: Phnom Penh��s fast-fading architectural treasures

That's where the couple keeps their road, mountain, fixed gear and cyclo-cross bikes, a workbench and bins for a host of accessories.

WSJ: A Bicyclists' House Built for Two

Here's the other thing: Cyclo-cross is fantastic for spectators.

WSJ: Cyclocross: The Other (Cooler) Super Bowl��Jason Gay

This prostaglandin-producing enzyme is called cyclo-oxygenase (COX).

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