What’s better than partying in late summertime sunshine? Partying in late summertime sunshine at a 131-year-old, beautifully restored historical landmark, that’s what.

On Sunday, Front Rangers, music lovers and vintage building enthusiasts are invited to soak up the final rays of the summer season at the Altona Grange Hall, a community center west of Longmont.

The hall’s annual fundraiser, Home on the Grange, is one part music festival, one part community gathering and one part annual celebration of Altona Grange #127. From noon to 7 p.m. Sunday, audiences can enjoy musical performances from country, bluegrass, electric blues, folk and mariachi artists alongside eats from local food trucks, beer, goods from area artisans, and a custom car show. Admission is $5.

Founded in 1891, the Altona Grange Hall property once upon a time served as a meeting place for local farmers and rural communities.

In recent years, the Altona Grange Hall was given a bit of a facelift, thanks to grants from Boulder County and a team of dedicated volunteers. Now, the butter-yellow building has been outfitted with new windows, clapboard wood siding and a fancy, shiny new sign.

According to longtime Altona Grange board member Henry Poirot, the hall is ready to be put to use and host events — big and small, fun and formal.

“Home on the Grange allows guests to see this amazing historical site while at the same time, celebrating our Longmont community,” Poirot said. “We invite people to come to this open house of sorts, to learn about the Altona Grange Hall and know that people can use it.

“Now, since the building is restored, the community can utilize it for meetings, for birthday parties, weddings and things like that. It’s a small community center that is historically significant.”

This weekend, guests can stake out the venue and its amenities for future event-holding purposes while also checking out music from headliners Las Dahlias, one of Colorado’s only all-female mariachi groups.

With a powerful ensemble backed by three violins, a vihuela and a guitarron, the group breathes new life into the mariachi repertoire while also incorporating Latin American music and original compositions. Las Dahlias have been featured at a variety of events — from the inaugural ball that ushered Gov. Jared Polis into office in 2019 to entertaining audiences during the Major League Baseball All-Star Week in Denver in 2021. The quintet is sure to get audiences dancing a zapateado.

Also performing at the event are Kimmer Jae, Minstrels of the Galaxy, 50 Shades of Blue and the Dave Dardine Project.

Admission to Home on the Grange is $5, kids are free. Proceeds from the event benefit the historic Altona Grange Hall, located at 9386 N. 39th St., Longmont. Learn more at altonagrange.org.