sightsee
verb /ˈsaɪtsiː/
  /ˈsaɪtsiː/
 [intransitive] only used in the progressive tensesVerb Forms
| -ing form sightseeing |    /ˈsaɪtsiːɪŋ/   /ˈsaɪtsiːɪŋ/  | 
- to visit interesting buildings and places as a tourist
- That day I was sightseeing in Rome.