August The Mansion

August The Mansion August The Mansion is a timeless and iconic dining destination within the oldest home in O'Fallon, Illinois. Clair County.
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Built in 1857 by August Wastfield, it is recognized today as a historical landmark by both the City of O’Fallon and St.

Happy Thursday. Happy Hour is from 2-5pm. Let’s enjoy that patio weather before the rain kicks in. ☀️
06/04/2026

Happy Thursday. Happy Hour is from 2-5pm. Let’s enjoy that patio weather before the rain kicks in. ☀️

This & Perfect Patio Weather ☀️Our Spring & Summer menu is in full swing. From our famous Brussel sprouts to our new Ste...
06/03/2026

This & Perfect Patio Weather ☀️

Our Spring & Summer menu is in full swing. From our famous Brussel sprouts to our new Steak Salad, we’ve got you covered with fresh & delicious options.

Our small plates & lunch menu are now extended hours from 11-5pm! Happy Hour specials from 2-5pm. Dinner 5-9pm.

Reservations can be made on our website: www.augustthemansion.com

We’ll see you soon!

Lunch Special of the Week: Asiago Chicken Sandwich Asiago Bagel, Marinated Chicken Breast, Cream Cheese Shmear, Sundried...
06/02/2026

Lunch Special of the Week: Asiago Chicken Sandwich

Asiago Bagel, Marinated Chicken Breast, Cream Cheese Shmear, Sundried Tomato, Arugula, Pickled Red Onion, Balsamic

Available Tuesday-Friday 11-5pm

Lunch Menu Spotlight: Chicken Salad 2.0 Our chicken salad got a spring revision & is now full of lemon & fresh herbs 😍 a...
06/01/2026

Lunch Menu Spotlight: Chicken Salad 2.0

Our chicken salad got a spring revision & is now full of lemon & fresh herbs 😍 available as a croissant or wrap.

Lunch is now available Tuesday-Friday 11am-5pm!

It’s Friday. We have a new menu for you. You deserve the night out. We’ll see you soon.Reservations Available: www.augus...
05/29/2026

It’s Friday. We have a new menu for you. You deserve the night out. We’ll see you soon.

Reservations Available: www.augustthemansion.com

Introducing the Mansion Club ✨Now available on the new lunch menu Tuesday-Friday 11am-5pm!
05/15/2026

Introducing the Mansion Club ✨

Now available on the new lunch menu Tuesday-Friday 11am-5pm!

In honor of Kentucky Derby Week we proudly present: The Mint Julep Available for a limited time. Grab one while you can....
04/30/2026

In honor of Kentucky Derby Week we proudly present: The Mint Julep

Available for a limited time. Grab one while you can. 🏇🌹

Burger of the Week 🔥🔥🔥8oz Certified Angus Prime Patty | Pepperjack Cheese | Pickled Jalapeño & Red Onion | Crispy Bacon ...
04/29/2026

Burger of the Week 🔥🔥🔥

8oz Certified Angus Prime Patty | Pepperjack Cheese | Pickled Jalapeño & Red Onion | Crispy Bacon Bits | Spicy Aioli

Available 11-5pm for Lunch & Happy Hour!

New Menu Sneak Peak: Lamb Meatballs | Cauliflower Baba Ghanoush | Mint Chimichurri | Pickled Radish | Feta Crumble
04/27/2026

New Menu Sneak Peak: Lamb Meatballs | Cauliflower Baba Ghanoush | Mint Chimichurri | Pickled Radish | Feta Crumble

Address

1680 Mansion Way
O'Fallon, IL
62269

Opening Hours

Tuesday 11am - 9pm
Wednesday 11am - 9pm
Thursday 11am - 9pm
Friday 11am - 9pm
Saturday 5pm - 9pm

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