Central America is definitely worth visiting!
Here's a top 10 for you to get a better idea of what you can find in this small, but very interesting part of the world (based on my own experience).
1. Lake Atitlán, Guatemala.
2. Antigua, Guatemala.
3. Lake Yojoa, Honduras.
4. Cerro Negro, Nicaragua.
5. Granada, Nicaragua.
6. Ometepe Island, Nicaragua.
7. La Fortuna, Costa Rica.
8. Puerto Viejo, Costa Rica.
9. Bocas del Toro, Panama.
10. Panama City, Panama.
Where are you headed next?