About an hour's drive south from Ipoh is a community of native Malaysians called the Semai, whose charge has been to preserve the Rafflesia, a putrid, parasitic flower worth seeking out to find because it is the largest in the world. Local Semai guides take travelers through the jungle wilderness to catch a glimpse of these flowers unfurling, although they need to be booked ahead of time so that they may correctly time the Rafflesia's bloom with the arrival of visitors.
We've included tour opportunities in our links section. They can make for a more adventurous time with some whitewater rafting or waterfall abseiling on the Ulu River. Check them out.