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The Mansion

Certificate of Excellence
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1680 Mansion Way, O'Fallon, IL 62269-3066
+1 618-624-0629
5:00 pm - 9:00 pm
Open now
All hours
Tue - Thu 5:00 pm - 9:00 pm
Fri - Sat 5:00 pm - 10:00 pm
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63 Reviews from our TripAdvisor Community

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Showing 62: English reviews
Level Contributor
21 reviews
7 restaurant reviews
common_n_restaurant_reviews_1bd8 7 helpful votes
4 of 5 stars Reviewed 1 week ago via mobile

My husband took me to the mansion for Valentine's Day. The food was excellent. The service was great. The restaurant has so much character. The only reason that it got 4 out of 5 stars is the price. It is expensive, but worth it.

1 Thank carrieme13
Level Contributor
4 reviews
4 restaurant reviews
5 of 5 stars Reviewed 3 weeks ago via mobile

Outstanding service and historic exquisite atmosphere! We held a small dinner party in celebration of my mom's birthday. From the moment of the first inquiry the owners were so receptive and accommodating. Once we arrived we truly felt like we were family and so well taken care of. The food was delicious as well. Would highly recommend for your special... More 

Thank LoveGoodService80
Kathy C, Owner at The Mansion, responded to this review

Thank you so much for your very kind review. We are so glad that you all enjoyed your evening, especially your mom! I will pass your compliments on to our staff, they work very hard and we are very fortunate to have them working with us. Thanks for letting us be part of such a special event, we do appreciate... More 

Level Contributor
3 reviews
5 of 5 stars Reviewed 4 weeks ago via mobile

We experienced wonderful service! The lobster nachos were amazing. The steak Wellington was divine! The banana rum chata bread pudding melted in your mouth! We will be back!

Thank Liz P
Kathy C, Owner at The Mansion, responded to this review

Liz, Thank you so much for your kind words. I will pass them on to both the front and the back of the house. I'm sure they will appreciate your wonderful review as much as I do. We are looking forward to seeing you again! With appreciation, Kathy More 

O'Fallon, Illinois
Level Contributor
25 reviews
9 restaurant reviews
common_n_restaurant_reviews_1bd8 8 helpful votes
3 of 5 stars Reviewed July 25, 2016 via mobile

Been there twice. Both times the service was so-so and the steaks were ok. My wife's was plain overcooked last time and the potatoes weren't really hot. Nothing you'd really worry about at a mediocre chain steakhouse. But for the price at The Mansion, I expected better.

Thank DGLG84
Kathy C, Owner at The Mansion, responded to this review

Hi, I am one of the owners of The Mansion. I am sorry we did not meet your expectations, people expect certain things when they come to the restaurant and they should get them. Could you please give us a call (618) 624-0629, we would like to talk to you about your experience. Respectfully, Kathy More 

Okawville, Illinois
Level Contributor
152 reviews
86 restaurant reviews
common_n_restaurant_reviews_1bd8 83 helpful votes
5 of 5 stars Reviewed July 7, 2016

We met friends for dinner and were delighted and impressed by the service and the meal choices. We ate early (6 pm) in the middle of the week, so it wasn't real busy - no waiting to be seated and adequate time to look over the varied menu and make our choices. Their chef prepares and presents the finest, freshest... More 

1 Thank Ron H
Kathy C, Owner at The Mansion, responded to this review

Hi Ron, Thank you so much for such a wonderful review- you made my day when I read it! As I have always said, we are so proud of the people who work here (both the front and the back of the house), they all have a good time at work, but they take take their work very seriously and... More 

Lexington, Virginia
Level Contributor
45 reviews
26 restaurant reviews
common_n_restaurant_reviews_1bd8 10 helpful votes
5 of 5 stars Reviewed June 12, 2016

This is a great restaurant for a special occasion. The owner has made several changes to the menu and now offers fresh fish from Hawaii. We had the surf and turf for two. The steak was excellent and the surf consisted of Wahoo. All were excellent and well presented and the service was excellent. The cost is expensive, but worth... More 

Thank wbl297
Kathy C, Owner at The Mansion, responded to this review

Hi, Thank you so much for your kind words. We really do appreciate them. Both the front and the back of the house work really hard to make sure everyone has an enjoyable experience here. I will pass along your comments to our staff, I know they will appreciate them as well. Respectfully, Kathy More 

Level Contributor
44 reviews
33 restaurant reviews
common_n_restaurant_reviews_1bd8 15 helpful votes
4 of 5 stars Reviewed May 23, 2016 via mobile

We enjoyed a wonderful dinner here on Saturday evening in celebration of my birthday. The atmosphere, service, drinks and food were all very good! We will be back!

Thank Laura K
Kathy C, Owner at The Mansion, responded to this review

Hi Laura, I am glad you had a wonderful dinner on your birthday. I will pass your kind words on to our front and kitchen staff. They all work very hard, we are lucky to have them working for us. Thanks, Kathy More 

Orem, Utah, United States
Level Contributor
4 reviews
3 restaurant reviews
common_n_restaurant_reviews_1bd8 2 helpful votes
1 of 5 stars Reviewed April 22, 2016

The location is nice. The service was OK, but not really considering the bill we got at the end (more on that later). Long story short, we ordered two specials without knowing the price, but expecting to pay around $30, considering what was on the menu. We got our meals after about 45 minutes. Mine (Beef Wellington) was just OK,... More 

1 Thank Bradford L
Kathy C, Owner at The Mansion, responded to this review

Hi Bradford, I apologize for it taking so long to respond, we are a family owned business and a family member had some serious health issues that I needed to help with. I am so sorry you did not have the experience you expected at The Mansion, please let me address some of the issues... The beef wellington is made... More 

Trenton, Illinois
1 review
common_n_restaurant_reviews_1bd8 1 helpful vote
5 of 5 stars Reviewed April 10, 2016

I've heard about the Mansion for years. It was excellent food, a calm environment, and great staff. I had the lamb, which was incredible, and my wife had the duck (also incredible!) I don't have a good enough vocabulary to do it justice! The price was very fare for quality dining. The real surprise is it's right in O'Fallon, I... More 

1 Thank Dustin S
Kathy C, Owner at The Mansion, responded to this review

Hi Dustin, Thank you so much for your kind words, it does mean a lot to us when someone goes out of their way for us. I am very proud of both the front and the back of the house staff, they work very hard to make sure people have the experience they expect when they come here. I will... More 

Troy, Illinois
Level Contributor
6 reviews
4 restaurant reviews
common_n_restaurant_reviews_1bd8 3 helpful votes
5 of 5 stars Reviewed March 6, 2016

We have enjoyed couples dinner at the Mansion over the past few years off and on and have always enjoyed it. The ownership changed about a year ago and we were concerned at first....only at first! In the past 8 months we have been there at least 4 times, twice when we decided to host a private event in one... More 

2 Thank Suzyrn89
Kathy C, Owner at The Mansion, responded to this review

Sue, Thank you so much for your kind words!! We appreciate everyone that walks into The Mansion, but do have a special place in our hearts for the military. Jerry and my dad were in the military and my son still is. The men and women who serve their country have all of our staffs gratitude! Thank you so much... More 

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Restaurant Details

Rating summary
  • Food
    4.5 of 5 stars
    4.5 of 5 stars
  • Value
    4 of 5 stars
    4.5 of 5 stars
Average prices
$21 - $50
American, Steakhouse, Seafood
Restaurant features
Seating, Waitstaff, Parking Available, Wheelchair Accessible, Serves Alcohol, Full Bar, Wine and Beer, Accepts American Express, Accepts Mastercard, Accepts Visa, Reservations, Private Dining
Good for
Special occasions, Large groups, Business meetings, Families with children, Romantic
Open Hours
5:00 pm - 9:00 pm
5:00 pm - 9:00 pm
5:00 pm - 9:00 pm
5:00 pm - 10:00 pm
5:00 pm - 10:00 pm
Location and Contact Information
  • Address: 1680 Mansion Way, O'Fallon, IL 62269-3066
  • Location: United States  >  Illinois (IL)  >  O'Fallon
  • Phone Number: +1 618-624-0629
We are steak and seafood restaurant with creative feature dishes. Jerry Conway is the co-owner and executive chef at The Mansion. He has worked at many fine dining establishments in his 25 years of being a chef, most notably he owned and operated The Cypress Room in Crystal River Florida and was an executive chef at Disney World. At Disney he was in charge of Epcot, The Magic Kingdom, The Royal Floridian and Disney's annual Wine and Cheese Festival. Chef Conway has had several recipes patented and became famous for his Sicilian Steak and Shea-Crab Soup at The Cypress Room, both of which are offered as Specials at The Mansion. The Mansion was built in 1857 by A.J. Wastfield, an independently wealthy farmer who built it for his fiance Elisie Osbourn of Lebanon. AJ's passion was politics, Abraham Lincoln was their most notable guest at their home. The Mansion was a stop on the underground railroad, the removable stairs that lead to the widows peak still remain as a reminder. At the age of 37 tragedy struck when A.J. Was fatally injured in a threshing machine accident on Nov. 15, 1866. He was survived by his wife and two young children, Walter and Julia. Elisie and her children continued to live in the Mansion for many years. The Mansion is currently owned and operated by Kathy Cox and Jerry Conway. The Mansion received a St. Clair County Landmark Award in 1963 from the St. Clair County Historical Society. Please come by and see what we have to offer, you will be glad you did! We are very proud of The Mansion and the history behind it. If you are interested in a short tour of The Mansion after your meal, please ask your server.

Questions & Answers

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Posting guidelines
Typical questions asked:
  • Do you have gluten-free options?
  • Is there a dress code?
  • Do you allow dogs on the outdoor patio?