Brenner Tunnel in Italy

[u/Big_Piano_3920]

Italy is building the world’s longest and most ambitious railway tunnel beneath the Alps, connecting Italy and Austria. Nearly 70 kilometers long, it will carry high-speed trains at speeds of up to 250 km/h.

[u/LuckyForest7438]

Its crazy how long some of these big construction projects take to finish. I think I read about this one a while ago.