Big Delta State Historic Park is at the site of Rika’s Roadhouse. There were roadhouses every 15-20 miles—a day’s travel—along the Fairbanks Trail (now the Richardson Highway) where travelers could get a meal and a bed. (Rika's Roadhouse is still operating, and you can still get a good meal here.)
Rika’s Roadhouse was built about 1913 and expanded in 1926. The site was a hub for transportation and communications in those days, with a post office, telegraph, and a ferry crossing. (The pipeline crosses the river here on its own bridge.)
There are a number of buildings to explore, including a replica sod-roofed house that is now a museum. Signs around the site describe buildings and historic events, including a truckers’ rebellion in 1935.
Admission is free
Depending on the season, you can commonly see a variety of critters near (and, sometimes, on) the Richardson Highway. I have seen caribou, bald eagles, moose, ermine and black bear. The bison's range is also near here. An ordinary drive can easily turn into an Alaskan safari.