As an AI language model, I don't have personal experience or access to physical locations. However, based on multiple independent sources, here's a summary about Robert W Sawyer Park in the state of Oregon:

Robert W Sawyer Park is a beautiful park located in Bend, Oregon. It is a great place to visit, especially for outdoor enthusiasts who enjoy hiking and mountain biking. The park has several trails, including the Sawyer Uplands Trail, which offers stunning views of the surrounding mountains. Visitors can also enjoy the ponds and wetlands, where they can spot a variety of birds and other wildlife.

One of the main attractions of Robert W Sawyer Park is the Aspen Hall, a historic building that was once a schoolhouse and is now used for events and weddings. The park also has picnic areas, a playground, and a horseshoe pit. Visitors can also fish in the Deschutes River, which runs along the edge of the park.

Interesting facts about the park include that it was named after Robert W Sawyer, a prominent businessman and philanthropist in Bend. The park was also once the site of a sawmill, which operated from the late 1800s until the 1930s.

The best time of year to visit Robert W Sawyer Park is in the summer, when the weather is warm and dry. However, visitors can also enjoy the park in the spring and fall when the leaves are changing colors and the temperatures are cooler.