Tunel Subfluvial Parana – Santa Fe
Travelers who make it to Parana are almost certainly coming to or from Santa Fe. And what better way to get between the two than on the country’s longest underground tunnel? Built back in 1969, its construction was an awe-inspiring feat of engineering at the time.
Tunel Subfluvial Parana – Santa Fe, RN168 80, Paraná, Entre Ríos, Argentina +54 343 420-0400

Tunel Subfluvial | © Grafica S.A./Wikipedia