There are times when placing a subject in the centre of the frame works really well. Symmetrical scenes are perfect for a centered composition. They look really well in square frames too.
This photo of the Ha’penny Bridge in the city of Dublin was the perfect candidate for a centered composition. Architecture and roads often make great subjects for a centered compositions.
Scenes containing reflections are also a great opportunity to use symmetry in your composition. You can often combine several composition guidelines in a single photograph.