Mission Viejo is a commuter city in the Saddleback Valley in Orange County, California. Mission Viejo is considered one of the largest master-planned communities ever built under a single project in the United States and is rivaled only by Highlands Ranch, Colorado in size. Its population as of 2020 was 93,653.

Jeronimo Open Space offers a park and a 1.7 mile trail located in Mission Viejo, California.

Terramor Aquatic Park is a 18" wader pool with big red bucket that dumps water and splash pad play area. It also includes Three picnic areas, restrooms and outdoor showers.

Eastbrook Park offers a playground set back in large fields of grass with swinging rings, pole to slide down, bridge and slides. It also has baby bucket swings set in the sand and picnic tables a short walk away.

Lake Mission Viejo is a reservoir created for recreation in Mission Viejo, Orange County, California. The reservoir is formed by an earthfill dam across the canyon of Oso Creek, which is part of the Trabuco Creek and San Juan Creek drainage basin.

Mission Viejo's Oso Creek Trail is a 5.1 kilometer heavily trafficked loop trail located near Mission Viejo, California that features beautiful wild flowers and is good for all skill levels.