LetsGoApp is a full-featured web application built with Next.js, React and MongoDB. Users can browse events across Poland, filter by city and type, and view detailed event pages. The project includes an admin panel with authentication for managing events and users. Tech highlights include NextAuth.js for auth, Tailwind CSS for styling and Mongoose for database access. The codebase features a modular API layer, App Router-based routing and a carefully organised component structure.