Sam Poh Dong 三宝洞
I can tell you, all of the chinese temples here are awesomely made. Their craving, painting and architectural building, is amazing.
Kek Lok Tong 极乐洞
Yea their temples somehow are group together in one place. Nice scenery inside. I mean not just inside the cave. When you come out, you will eventually feel like you are in a whole new world.
Ling Sen Dong 灵仙岩
Super colorful temples. Most colorful one i can say.
Nam Tian Dong 南天洞
Also another beautiful chinese temple.
Super a lot of temples but those are the main and the attraction in Ipoh i will say.
Recommendation: Bring sunblock and hat. And water!