Climb Mount Kinabalu!  

Providing you are relatively fit anyone can climb to the top of Borneo’s highest mountain at 4,095 metres (13,435 feet). The climb, which doesn’t require specialist equipment, normally takes two days to ascend and descend. Not suited to young children due to a few steep sections, the peak is regularly climbed by tourists between the ages of 15 and 70. 

The climb is quite physically demanding work, however, especially at altitude, and it is recommended to get in shape with regular exercise before your visit.