Here are 10 things to see in Trieste on a trip: 1. Piazza Unità d'Italia: Trieste's main square, overlooking the sea, is one of the largest in Europe and offers a breathtaking view of the bay. 2. Miramare Castle: Situated on a cliff overlooking the sea, this magnificent white castle was built for Archduke Ferdinand Maximilian of Austria and offers a splendid display of furniture, paintings and objets d'art. 3. St. Just Cathedral: Located on St. Just Hill, the cathedral offers a panoramic view of the city and also houses a museum displaying historical artefacts. 4. Revoltella Museum: This modern art museum houses an extensive collection of works by leading Italian and European artists, including Impressionists, Futurists and contemporary artists. 5. Grotta Gigante: Located a few kilometres from Trieste, this is the largest tourist cave in the world open to the public. Its size and natural formations make it a fascinating visit. 6. Roman Theatre: This ancient Roman theatre, dating back to the 1st century A.D., gives an idea of what Trieste was like in Roman times. You can visit the ruins and admire the view over the city. 7. Museo del Mare: Located in the city's atmospheric old arsenal, the museum houses a vast collection telling the maritime history of Trieste and its port. 8. Municipal Museum of History and Art: This museum offers a historical and artistic overview of the city, with a large collection of works of art and historical objects. 9. Canal Grande: This artificial canal that runs through the historic centre of Trieste is an ideal place for a romantic stroll. Along its banks are picturesque colourful buildings and cosy restaurants. 10. Diego de Henriquez War for Peace Museum: Located in a former military fortress, the museum offers an insight into Trieste's war history and promotes peace and understanding between nations. And to discover all the curiosities of the city without unnecessary research, try our free map. Try Secret Maps. Thousands of legends, ghost stories, art treasures and many wonders await you!