If you're into the idea of visiting the past at Fort Edmonton, why not take it to the next level and spend the night? This historic hotel has simple period-decorated rooms from the roaring 1920s, and staying here gives you free entry into the fort and its surrounds. There's an on-site restaurant and English high tea ($20) on offer during the summer.
Once the park closes, it's quiet – very, very quiet.
Note that the hotel is closed until 2021 to the general public, but available for special events.