A good orientation exercise is to start with an organized sightseeing tour with Dublin Bus from Upper O'Connell Street or Bus from the Travel Centre at Busjras in Store Street.
 The Dublin Bus tour does not stop at Upper O'Connell Street.
mnli hypothesis:  The Dublin Bus tour does not stop at Upper O'Connell Street. premise: A good orientation exercise is to start with an organized sightseeing tour with Dublin Bus from Upper O'Connell Street or Bus from the Travel Centre at Busjras in Store Street.