TripAdvisor is built on traveler reviews. Millions of people have written about hotels, restaurants, attractions, and experiences in destinations around the world. Each listing includes ratings, photos, and often detailed comments about what worked and what didn't. You can filter by traveler type, time of year, or specific concerns, which helps when you're trying to figure out whether a place is right for a family with young kids or a solo traveler on a budget.

The site also lets you book hotels and experiences directly, and there's a forum section where people ask and answer destination-specific questions. The reviews are not immune to exaggeration or fake entries, so reading a few across different ratings gives a more balanced picture. For planning a trip, it's one of the first places many people check, and the sheer volume of content makes it useful even when you disagree with the consensus.