A self-guided cycle journey hugging the Adriatic Sea from Venice to Porec. On this fascinating route through Italy, Slovenia and Croatia we have carefully selected the best sections to cycle, while travelling other parts by train. Aquileia Roman ruins - Option to visit the remains of this once important Roman city Trieste - Grand architecture, plazas and coastal promenade Wetlands - Varied and beautiful habitats with birdlife in the protected delta of the River Isonzo .