Top O'Fallon Venues

• Spaces for 14-100 Guests
• 5 Restaurants
• 5 Hotels
• 1 Meeting Space

Ruth's Chris Steak House St. Louis occupies a prime position inside the Hyatt Regency Hotel in downtown St. Louis, steps from the Gateway Arch and with unobstructed Arch views from select tables. A family-owned franchise in operation since 2009, the restaurant centers on hand-cut steaks served sizzling on 500-degree plates and a consistent standard of attentive, fine-dining service. Five private dining rooms give groups a range of options. The Boardroom seats an intimate party of 14 for executive dinners or focused meetings, while Ruth's Room and the Napa room scale up to 25 and 30 guests respectively, suited to business gatherings and private celebrations. The Sonoma room accommodates up to 60, and the combined Napa and Sonoma space opens to 100 guests for larger receptions and events. All private rooms are offered with no rental or technology fees and come equipped with HDTVs and sound systems.

• Spaces for 700 Guests

• Spaces for 20-250 Guests
• 1 Event Space
• 2 Meeting Spaces

Sunnyhill Adventures is an American Camp Association-accredited outdoor recreation campus in Dittmer, Missouri, operated by Sunnyhill, Inc. The facility hosts over 500 campers each summer through themed programming, and welcomes school groups, corporate teams, nonprofits, religious organizations, and youth groups for day visits and overnight retreats throughout the year. The campus offers a range of indoor and outdoor gathering spaces, including the Old Lodge Board Room and Health & Wellness Conference Room for meetings and workshops, and the Sunburst Cafeteria for group dining and casual events. Outdoor activities — a 42-foot alpine tower, 540-foot tandem zipline, kayaking, catch-and-release fishing, archery, and nature trails — make the facility a natural setting for team-building retreats and celebratory group weekends. Inclusive design and adaptive programming ensure the campus is accessible to participants of all abilities.

• Spaces for 500 Guests

The Falls Event Center is a full-service event venue in Columbia, Illinois, approximately 15 minutes from downtown St. Louis. The venue is best known for its striking indoor and outdoor waterfalls, which serve as ceremony backdrops and set the property apart from conventional banquet halls. The Falls specializes in weddings, corporate gatherings, and private celebrations, offering all-inclusive packages that bundle in-house catering, a full-service bar, and professional event coordination under one roof. The in-house culinary team builds customizable menus from fresh ingredients, presented as either plated dinners or buffet-style service. The venue's flexible meeting rooms can be configured individually or combined to accommodate groups of up to 500 guests.

• Spaces for 35 Guests

Highlands Golf & Tennis Club offers event spaces for your next celebration in St. Louis, Missouri.

• Spaces for 400 Guests

• Spaces for 70 Guests

• Spaces for 180 Guests
• 1 Event Space
• 1 Park

Quail Ridge Lodge is a 3,600-square-foot rustic cedar lodge banquet facility managed by St. Charles County Parks, situated within Quail Ridge Park in Wentzville, Missouri. The single-floor space features a large vaulted ceiling, panoramic windows, and a wooden deck that overlooks a nearby lake and gazebo, accommodating up to 180 guests. The lodge is well suited to wedding receptions, organization banquets, family gatherings, and private celebrations. It comes equipped with a warming kitchen, and tables and chairs are included with the rental. The park grounds offer scenic outdoor space near the lake, making it a natural setting for ceremonies or cocktail receptions. Reservations are available up to two years in advance through the St. Charles County Parks recreation department.

• Spaces for 75 Guests

• Spaces for 50 Guests

Llywelyn's Pub takes its name from the Celtic meaning of "Good Times," a spirit that has shaped the establishment since its founding in 1975 in St. Louis's Central West End. The St. Charles location carries forward that tradition, offering Celtic-inspired fare, fine pours, and a warm, inviting atmosphere rooted in a genuine commitment to community. The pub is family friendly and welcomes guests for everything from casual evenings to celebratory gatherings. A dedicated banquet menu is available for groups looking to host private events.

• Spaces for 60-400 Guests
• 1 Restaurant
• 2 Hotels
• 1 Meeting Space

Hollywood Casino St. Louis offers more than 20,000 square feet of private event space across its Maryland Heights property, with configurations suited to gatherings from 15 to 400 guests. The newly renovated Conference Center spans 4,501 square feet of flexible, customizable space — designed for weddings, galas, reunions, corporate meetings, and trainings — while the Melrose Room and the Rotunda provide well-suited settings for smaller receptions and dinners. In-house catering covers full-service wedding packages in reception-style, buffet, or plated meal formats, and professional audio-visual services are available throughout the event facilities. The property's hotel and dining outlets allow guests to extend their celebration on-site. Complimentary airport shuttle service connects the venue to St. Louis Lambert International Airport, just ten minutes away, and complimentary onsite parking is provided for all event guests.

• Spaces for 150 Guests

Thornhill is a Federal-style historic estate built in 1819 as the home of Frederick Bates, Missouri's second governor — making it the oldest standing governor's residence in the state. The property was added to the National Register of Historic Places in 1974 and today sits within the nearly 200-acre Faust Park in Chesterfield, Missouri. The estate's grounds preserve the original character of a 19th-century working farm: the main house, a barn, reconstructed summer kitchen, smokehouse, icehouse, orchard, and herb garden all remain on-site, offering a rare authentic backdrop for ceremonies and private gatherings. St. Louis County Parks and Recreation stewards the property and offers dedicated outdoor wedding sites and rental spaces for private events, allowing couples and groups to celebrate against the backdrop of one of the region's most significant historic landmarks.

• Spaces for 400 Guests

The DoubleTree by Hilton Hotel St. Louis - Westport is a 327-room hotel situated off I-270 and Page Avenue near the Westport Plaza business and entertainment district. The property offers more than 12,000 square feet of banquet and meeting space across 14 event venues, accommodating gatherings from small meetings to receptions of up to 600 guests. The Plaza Ballroom serves as the venue's signature space for large events, including weddings, galas, and corporate celebrations. A professional catering team and complete A/V support are available for all functions, and a dedicated planning team works with clients from initial inquiry through event day.