We see the sunrise in Tarragona, a World Heritage city, from the wrought-iron railing known as the Balcó del Mediterrani, one of those perfect sunsets, with the sun on the horizon over the sea, which the Romans once saw as they occupied the stands of the amphitheatre at our feet; the same warm light that led the poet Florus to describe Tarraco as the “city of eternal spring”. Our guide tells us that the stone of the Mèdol quarry on the outskirts of the city was used to construct buildings such as the circus, the praetorium and the walls we are now visiting.