Marshall Gold Discovery State Historic Park is located in Coloma, California and is the site where gold was first discovered in California in 1848, sparking the California Gold Rush. The park is a popular destination for history buffs and outdoor enthusiasts alike.

One of the main reasons to visit the park is to learn about the history of the California Gold Rush and get a glimpse of what life was like for the miners who flocked to the area in search of wealth. Visitors can take guided tours of the historic town of Coloma, see the reconstructed Sutter's Mill, and explore the museum which houses artifacts from the Gold Rush era.

Other points of interest in the park include hiking and biking trails, camping areas, and opportunities for fishing and swimming in the American River. The park also hosts a variety of events throughout the year, including living history days, gold panning demonstrations, and music festivals.

Interesting facts about the park include the fact that it was designated as a state historic park in 1942, making it one of the oldest state parks in California. The park is also home to the historic James W. Marshall Monument, which was erected in 1890 to honor the man who discovered gold in the area.

The best time of year to visit the park is during the spring and fall when temperatures are mild and crowds are smaller. However, the park is open year-round and each season offers its own unique opportunities and attractions.