What’s the best platform for booking travel excursions, activities, and things to do? Many seasoned and first-time travelers use Viator, a global tour and attraction booking company based in San Francisco. Viator is certainly not the first or the only existing booking site for consumers, but it has certain benefits that many travelers find appealing.For first-time travelers, using a booking company to plan excursions to places they’ve never been is the best way to travel stress-free. Companies like Viator make planning and embarking on trips much easier, whether you’re traveling solo, with a partner, or with the whole family.