The recently discovered Rio Secreto is an underground river cave full of stalactites and stalagmites that are literally millions of years old. The mineral formations here - and the experience of swim-hiking through them - is truly remarkable.
Akumal Monkey Sanctuary & Rescued Animals is an animal conservation and rehabilitation sanctuary located in Akumal, Mexico. The sanctuary cares for around 55 species (~200 animals) and is located roughly seven minute's drive from Akumal beach.