Fraser’s Hill, Malaysia is a small town in the highlands (about 2 hours from Kuala Lumpur). There are quite a few nice trails that let you get a sense for a natural forest yet they are easily walked to from the many inns and hotels in Fraser’s Hill.
The Bishop Trail is one of the longer trails with a few fairly difficult sections. I found it quite enjoyable, but be prepared for a couple sections that will challenge you to scramble across a creek bed or up a steep collapsed trail.