On Saint Louis is a local online guide designed to help residents and visitors discover businesses, events, and activities across Saint Louis, Missouri. Its directory features more than 93,000 local business listings, organized into categories that make it easy to explore the area. Visitors can search for restaurants, coffee shops, bars, breweries, hotels, shops, attractions, parks, health and beauty providers, home services, automotive businesses, and community organizations.

The site also highlights upcoming events, including concerts, comedy, and sporting events, alongside articles, columns, guides, and reviews about Saint Louis and other travel destinations. A weekly email newsletter shares local places, events, and recommendations for the weekend. Businesses can claim or add a listing, provide details such as photos and hours, and explore advertising, sponsorship, or listing-upgrade options. Content creators can contribute articles, while readers can use search and category browsing to find services and experiences. On Saint Louis brings practical local discovery and editorial content together in one resource for exploring the city.