Piazza Unità d’Italia, with its Molo Audace, opens out onto the Adriatic Sea from where the Bora comes, the strong wind that sweeps the streets with its intensity. The architecture of Trieste provides for the coexistence of different styles: liberty and neoclassic, romantic and baroque, eclectic and Hapsburg. The same is true of the number of different religious buildings, evidence of a rare cohabitation: from the synagogue to the Orthodox and Serbian Orthodox Churches, to the Evangelical Lutheran and Helvetic ones. A few kilometres from the city lies the Grotta Gigante which, with its 280 meters in length, is considered the largest tourist cave in the world.