As an AI language model, I don't have personal opinions and experiences. However, based on my research I can provide you with the following summary about Lief Erickson Park in the state of Nebraska.

Lief Erickson Park is a popular destination located in the city of Omaha, Nebraska. The park is named after the famous Viking explorer and features a large statue of him at the entrance. The park spans over 20 acres and offers visitors a variety of recreational activities, including hiking, biking, and picnicking.

One of the main attractions of the park is the beautiful Rose Garden, which features over 100 varieties of roses. Visitors can also explore the scenic walking paths, which wind through the park and offer stunning views of the Missouri River.

Another notable feature of the park is the Lewis and Clark Interpretive Trail, which provides educational displays and information about the historic expedition. Additionally, the park is home to several memorials and monuments, including a bronze statue of Standing Bear, a Native American activist.

The best time of year to visit Lief Erickson Park is during the spring and summer months when the flowers are in full bloom and the weather is mild. However, the park is open year-round and offers visitors a peaceful and serene retreat from the hustle and bustle of the city.

Overall, Lief Erickson Park is a must-visit destination for anyone traveling to Omaha, Nebraska. With its beautiful gardens, historic exhibits, and scenic walking paths, the park offers something for everyone to enjoy.