Direct answer
The three most surprising must-see places in Mission Viejo are: 1) Oso Creek Trail and Wilderness Park, 2) Mission Viejo Lake and Lake Mission Viejo community activities, and 3) Norman P. Murray Community Center & surrounding cultural sites.
Why these are surprising and worth visiting
1) Oso Creek Trail & Oso Wildlife Preserve
2) Lake Mission Viejo & Community Activities
3) Norman P. Murray Community & Cultural Sites (Murray Park area)
Extra suggestions and logistics
Quick summary
Enjoy exploring Mission Viejo’s blend of natural charm and community life.