see the sights
To visit or view noteworthy things or locations, especially those frequented by tourists. I think we'll just spend the day seeing the sights, and then we can meet up with you after you finish work. I don't care for guided tours around cities I'm visiting. I'd rather see the sights in my own time.
see the sights
to see the important things in a place; to see what tourists usually see. We plan to visit Paris and see the sights. Everyone left the hotel early in the morning to see the sights.
see the sights
View noteworthy features or objects, especially when visiting a place. For example, It's impossible to see all the sights of Paris in just a week. [Mid-1700s]
see the ˈsights
visit the famous places in a city, country, etc: We spent our first day in Rome seeing the sights. ▶ ˈsightseeing, ˈsightseer nouns: We spent the afternoon sightseeing.There are always sightseers outside Buckingham Palace.