A tour operator is leading tours for travelers who desire the guidance of an informed person to lead them to places of interest. Normally provides verbal descriptions of sites and landmarks as another person operates the vehicle transporting the tourists. Sometimes a tour operator operates independently and offers expeditions serving specified interests, such as a particular industry, hobby or type of landscape. Examples of these specialized tours often include trips to garment districts, historic districts or animal sanctuaries. This type of tour operator is often an expert in these areas of interest and sought out by those with specific curiosities.