Baelo Claudia Monument · Tarifa, Campo de Gibraltar, Cádiz Roman city dedicated to tuna fishing and salting, at its height between the 1st century BC and the 2nd century AD, located on Bolonia beach. It was declared Monumento Nacional (Spain's heritage designation in force until 1931) by Royal Order of 19 January 1925, following the excavations of 1917-1921. apogeo ss. I a.C.-II d.C.; declaración de Monumento Nacional 19 de enero de 1925 Photo: Anual (CC BY 3.0) What to see and do in Tarifa