What does sights mean?

"Sights" is an English noun, meaning "attractions", "scenic spots" or "landscapes". It is usually used to describe famous attractions in a certain city or region, such as historical buildings, museums, natural scenery, etc.

In the tourism industry, "sights" are often used to refer to tourist attractions or tourist destinations. For example, when travelers are planning a travel route, they may check the city's tourist attractions guide to learn about the city's famous attractions and decide which attractions are worth visiting.

"See the sights" is a common phrase meaning to visit a city's attractions or famous attractions. For example, if you travel to Paris, you may be advised to visit famous attractions such as the Eiffel Tower, the Louvre, Notre Dame, etc. so that you can "see the sights of Paris."