The Torre del Rellotge played a key role in the creation of the international decimal metric system still in use today. It was one of the reference points used by the scientist Pierre F. Méchain, alongside the castell de Montjuïc and the catedral de Barcelona.
Although its interior is not open to visitors, the tower is visible from several vantage points around Port Vell. At sunset, the light brings out its geometric forms, making it one of the harbour’s most striking views.