Admission Increase Starting Nov. 1

The Hieronymus Mueller Museum will be raising the adult admission rate from $2/adult to $3/adult beginning November 1, 2024.

“The museum originally opened in 1995 with an admission of $1.50/adult and raised that to $2/adult in 2005,” says Museum Director, Katherine Unruh. “The upcoming change better reflects the value people receive from their visits and will help care for the museum’s collection.”

Children’s admission will remain the same at $1/child. Mueller Company employees and retirees, along with any guests that attend with them, will continue to enjoy free admission year-round.

To keep the museum accessible to as many people as possible, the Hieronymus Mueller Museum also announces a commitment to host two free admission days every year. Those free admission days will be announced in advance and published at MuellerMuseum.org and Facebook.com/MuellerMuseum. You may also subscribe to the museum’s free quarterly newsletter to find out when free admission days will be.

Hieronymus Mueller Museum tells the story of Hieronymus Mueller, his family, and the company he founded. Visitors can see some of Hieronymus’s own hand tools, Mueller products through the years, and explore how Mueller Co. continues to impact their daily life to this today by delivering water and gas when and where it’s needed. The museum offers a gift shop and activity sheets for children and adults, including a scavenger hunt activity that accompanies the exhibit.

The museum is open every week of the year: Tuesday through Saturday from 1pm to 4pm, except major holidays. For admission and more, visit MuellerMuseum.org.

The museum is located near downtown Decatur, at 420 W. Eldorado Street, in Decatur, IL. To get to the museum from downtown Decatur, go north on Route 51 and turn left onto Eldorado Street/U.S. 36. The museum will be on your right. Plenty of free parking is available.

Your Invitation

The Hieronymous Mueller Museum is proud to display numerous exhibits and memorabilia from the Company’s history. We invite you to visit this incredible collection at your earliest convenience.

The museum’s address is 420 West Eldorado Street in Decatur, IL. We’re open to the public on Tuesday through Saturday (except holidays) from 1:00 – 4:00 p.m. You can also schedule a visit by calling 217-423-6161. Admission is $2.00 for adults and $1.00 for those under 17 years of age.

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Working at Mueller Co. in 1925

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The story of Hieronymus Mueller and his interest in automobiles is pretty well known by those of us with an interest in Mueller history. Hieronymus earned a spot in automotive history through this success in America’s first auto race in 1895.

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Defeating “The Cup of Death”

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News & Events

Fire Hydrant Display through February 2025

See the inside of a Mueller fire hydrant in action during a temporary hands-on exhibit at the Hieronymus Mueller Museum in Decatur, IL. The museum is open every Tuesday through Saturday from 1pm to 4pm.

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Collections Internship – PAID

The Hieronymus Mueller Museum occasionally offers a paid Collections Internship. There is not an internship opportunity open at this time, but please check back.

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Taste of History

A progressive evening of cocktails and hors d’oeuvres returns!

The Taste of History event returns this year Saturday, October 7 from 5-9pm. During this event, you’ll explore five of Decatur’s history sites while enjoying delicious hors d’oeuves and drinks at each location.

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The museum will be closed Wednesdays, October 23rd and 30th for staff meetings.
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