Alexa Horochowski's 2014 installation at The Soap Factory. Star Tribune photo by Tom Sweeney

A lot has changed in the 25 years since The Soap Factory art complex started life as No Name Exhibitions.The popoular outpost for Halloween fun and experimental art is celebrating its quarter century anniversary with a benefit party from 6 p.m. to midnight, Saturday, Nov. 15 in its cavernous, brick-and-timber warehouse, a former soap factory, at 514 S.E. Second St., Minneapolis.

The Factory's presence there has been a spur to development in what is now a fast-gentrifying neighborhood near the Mississippi River. Back in 1989, what is now a rough-hew home to avant garde art was still a functioning factory.

"There have been a lot of changes in this building," said Ben Heywood, executive director of The Soap Factory. "Back then they were literally melting down animals and turning them into fat and then throwing lye into it and turning it into soap."

Back then a group of local artists banded together and started No Name Exhibitions in another quasi derelict building known as the Skunk House. On the opposite side of the Mississippi and just west of Hennepin Av., the Skunk House was subsequently acquired by the Federal Reserve bank to house its air conditioning plant, Heywood said. No Name then moved into the bottling house of the former Grain Belt Brewery and from there to the Soap Factory in 1995.

"Our exhibition space went from 600 square feet to 50,000 square feet when we moved here, so that's a big change," Heywood said.

The Factory building is still pretty raw, but it too has changed over the years. Now, for example, it has bathrooms. And in January it will add heating and air conditioning for the basement and first floor. Previously the place closed in winter months when there was no heat.

Other improvements include the addition of a permanent staff, rather than volunteers who ran the place until 2002. With staff came a year-round exhibition and performance program. And the ever-popular Haunted Basement Halloween shindig. And now the 25th anniversary party.

Billed as a "day of citywide fun," the anniversary committee may have overpromised a bit. There won't be hot air balloons or marching bands on Nicollet Mall, much as Heywood would love such stuff. By "city-wide" they mean art impressario and cultural gadabout Andy Sturdevant leading a Soap Factory History tour starting at 3 p.m. Saturday in a vintage bus that will roll past previous Factory locales.

"Andy is a city-wide celebration in himself," Heywood explained. Indeed.

The Factory invited 9,000 people to the shindig and expects a good turn out.

"We can hold 700 people on the first floor and we should have a full house," Heywood said.

Party goers can expect Beatrix* JAR and Solid Gold to kick off the event with DJs Diarrhea (Jackie Beckey) and Christopher Saint Christopher (Christopher Allen) commanding the dance floor and emcee Ian Rans running the show.

There will be complimentary cocktails by Bittercube, gourmet nibbles from Fabulous Catering and Common Roots catering, small plates from Tilia, Heyday, Haute Dish, Third Bird, and the University of MN College of Design. Plus art by Aaron Dysart and Andy DuCett. Performances by artist Jaime Carrera and theater company Live Action Set. Plus an auction, of course.

(Party 6 p.m. to midnight, Nov, 15, tickets $50 to $2,000. The Soap Factory, 514 Second St. S.E., Mpls. For tickets: www.soapfactory.org)