Top O'Fallon Venues

• Spaces for 50 Guests

• Spaces for 200 Guests

• Spaces for 250 Guests

• Spaces for 13-1,105 Guests
• 8 Hotels
• 1 Ballroom
• 7 Meeting Spaces

River City Casino & Hotel opened in 2010 as a gaming and entertainment destination in Lemay, about 10 miles south of downtown St. Louis. A 2013 expansion added a 200-room hotel and a 14,000-square-foot multi-purpose event center. The River Ballroom anchors the event center: 10,570 square feet of banquet space with 24-foot ceilings and a state-of-the-art stage, accommodating up to 720 guests for a seated dinner or 1,105 for a standing reception. The ballroom divides into five breakout rooms via movable partitions for groups of any size, and a separate meeting room and board room are available for more intimate gatherings. A 1,600-space covered parking structure serves the property. All wedding packages include a 24-by-24-foot dance floor, banquet chairs, linens, and table décor, along with a dedicated banquet captain and complimentary tasting for up to four guests. In-house culinary teams support menus from hors d'oeuvres and plated dinners through late-night snacks.

• Spaces for 400 Guests

Rose of the Hill by Favazza's is a private Italian banquet facility on "The Hill" in St. Louis, offering exclusive use of the entire venue for weddings, private celebrations, and corporate gatherings. The facility includes a classic and elegant dining room, a ballroom dining area with a dedicated dance floor, and 16-foot ceilings with chandeliers. Original artwork murals and décor carry throughout, and the venue includes an attended coat check room and a private adjacent parking lot. The facility is handicap accessible. All catering is handled by Favazza's, with menus spanning wedding buffets, seated dinners, and Italian family-style service alongside a full bar program. Facility rental covers complete private use of the bar area, lobby, dining room, and dance floor.

• Spaces for 50-150 Guests
• 5 Restaurants
• 1 Bar
• 5 Total Spaces

Favazza's on the Hill is a family-owned Italian restaurant in St. Louis's historic Hill neighborhood, founded in 1978 by Vito Favazza, his wife Ellen, and their son Tony. Built on the values of family, tradition, and genuine hospitality, the restaurant has been welcoming guests for over 45 years. Today, Tony and his brother John carry that legacy forward, along with the next generation of the Favazza family. The restaurant occupies the former Ruggeri's building — a historic space in The Hill where Frank Sinatra and the Rat Pack once dined and where Yogi Berra worked as a waiter. The menu draws on classic Italian recipes passed down through generations, featuring house-made pastas and wood-fired specialties. For private events, Favazza's offers a range of dedicated spaces across the restaurant, from an outdoor pavilion and plaza accommodating up to 150 guests to private dining rooms and a lower-level wine room suited for more intimate gatherings.

• Spaces for 300 Guests

• Spaces for 60-280 Guests
• 1 Historic Space
• 3 Art Galleries
• 1 Meeting Space

Third Degree Glass Factory is a gallery, studio, and event venue in St. Louis, Missouri, established in 2002 by founders Jim McKelvey and Doug Auer. The space occupies a transformed 1930s car dealership and service station — now the only publicly accessible glass art studio and education center in the St. Louis area. The venue hosts a range of events, from weddings and nonprofit galas to corporate retreats and private parties. What sets Third Degree Glass apart is the art that fills the building: guests celebrate surrounded by striking glass works created by the factory's own artists, and private glass experiences — live glassblowing demonstrations and hands-on classes — can be added to any event. What started as a passion for glass art has grown into a multifaceted destination for education, retail, studio rental, private events, and exhibitions.

• Spaces for 160-250 Guests
• 1 Historic Space
• 1 Garden
• 1 Park

The Jewel Box is a 1936 Art Deco display greenhouse in Forest Park, St. Louis, widely recognized as one of the park's most distinctive architectural landmarks. A $3.5 million renovation in 2002 opened up its interior into a sweeping, sunlit hall — 50 feet high, 55 feet wide, and 144 feet long — enclosed by cantilevered glass walls supported by arched steel beams. Inside, tropical trees, seasonal florals, hanging plant baskets, and a central fountain fill the space year-round, with the botanical displays shifting with each season. The Jewel Box is fully climate controlled. The venue accommodates up to 250 guests for wedding ceremonies and up to 160 for seated receptions, with tables and chairs included in all rentals.

• Spaces for 200 Guests
• 1 Hotel
• 1 Meeting Space
• 1 Convention Center

The Charles F. Knight Executive Education and Conference Center is a five-story, 135,000-square-foot facility on Washington University's Danforth Campus in St. Louis. Situated at the heart of the Olin Business School, it was built to bring together students, faculty, corporate leaders, and executives for collaborative dialogue and strategic thinking. Fully renovated in 2025, the venue now features more than 19,000 square feet of flexible meeting and event space, 66 hotel guest rooms, full-service in-house catering, and advanced built-in A/V technology throughout every room. The Knight Center holds IACC certification and earned the 2024 Venue of the Year honor at the MPI Circle of Excellence Awards. It accommodates events of all scales — from intimate executive sessions to private dinners and special gatherings of up to 200 guests — with dedicated conference planning staff on site to support every detail.