Peña Adobe Regional Park is located in Vacaville, California, and it is a popular destination for both locals and tourists. The park covers an area of 470 acres and it offers a range of activities and attractions for visitors.

One of the top reasons to visit Peña Adobe Regional Park is to explore the historic Peña Adobe and the adjacent Mowers-Goheen Museum. The Peña Adobe is a two-story adobe structure built in the early 1850s, and it is the oldest building in Solano County. The Mowers-Goheen Museum features exhibits that showcase the history of the area, including Native American artifacts, ranching equipment, and photographs.

Another popular activity at the park is hiking. There are several trails that wind through the hills and valleys of the park, offering stunning views of the surrounding landscape. Visitors can also enjoy picnicking, horseback riding, and birdwatching.

Interesting facts about the area include that Peña Adobe Regional Park was once a stop on the Pony Express route and that it was also used as a filming location for several Hollywood movies, including "Gone with the Wind" and "The Magnificent Seven".

The best time of year to visit Peña Adobe Regional Park is in the spring when the wildflowers are in bloom and the weather is mild. However, the park is open year-round, so visitors can enjoy its attractions and activities any time of the year.

Overall, Peña Adobe Regional Park is a must-visit destination for anyone interested in history, hiking, and outdoor recreation. The park's rich history, scenic beauty, and range of activities make it a popular destination for visitors of all ages.