2. Grotta GiganteSgonico Grotta Gigante , also known as Riesengrotte or as Grotta di Brisciachi, is a giant cave on the Italian side of the Trieste Karst , close to the village of Borgo Grotta Gigante or Briščiki in the municipality of Sgonico. Its central cavern is 107 m high, 65 m wide and 130 m long, putting it in the 1995 Guinness Book of Records as the world's largest tourist cave. This record was broken in 2010 when La Verna cave in the south west of France was opened to tourists, measuring 255 by 225 by 195 metres . From Wikipedia, the free encyclopedia.
3. Basilica di AquileiaAquileia Aquileia is an ancient Roman city in Italy, at the head of the Adriatic at the edge of the lagoons, about 10 kilometres from the sea, on the river Natiso , the course of which has changed somewhat since Roman times. Today, the city is small , but it was large and prominent in Antiquity as one of the world's largest cities with a population of 100,000 in the 2nd century AD. and is one of the main archeological sites of Northern Italy. From Wikipedia, the free encyclopedia.
4. Laghi di FusineTarvisio Fusine in Valromana , is a frazione of the comune of Tarvisio in the Province of Udine, in the autonomous Friuli-Venezia Giulia region of northeastern Italy. From Wikipedia, the free encyclopedia.