The drive from Sigiriya to Kandy should take about 2-3 hours. The two major tourist attractions in Kandy are the Temple of Tooth Relic and the Kandy Botanical Garden. There is also the Big Buddha statue. We were not very enthusiastic about the Botanical Garden, so instead we took our time strolling around the Kandy lake, walking around the city, looking for some nice eating places instead, after we were done with the Temple of Tooth Relic. But I will let you take a call on how to spend the day in this city! Walking around the Kandy lake is a must. Some western tourists might also find a cultural program show in the evening interesting!