According to forum posts, Trieste offers a city bus network managed by Trieste Trasporti, with day passes available for €3.10. The buses extend to surrounding areas like Miramare and Sistiana. Tickets can be purchased at various local vendors such as newsagents and tobacconists or from ticket machines at some bus stops.

Some travelers mentioned that there is a train service that connects Trieste Centrale to Trieste Airport, with early morning departures available. Additionally, there is a local bus service from Trieste city center to the airport, though early morning options might be limited. Both modes stop a short distance from the airport terminal, requiring a brief walk.

Travelers have called out the usefulness of the official Trieste Trasporti website for detailed bus routes and schedules, helping navigate both the city and its outskirts effectively.

According to forum posts, Trieste boasts significant historical sites including Miramare Castle and the Roman Theatre. These destinations offer a glimpse into the rich history and architectural grandeur of the region.

Travelers have called out Piazza Unità d'Italia as a central spot in Trieste, praised for its scenic waterfront views and vibrant atmosphere. This area, along with the adjacent Molo Audace and Piazza della Borsa, is a must-visit location for first-time visitors.

Some travelers mentioned the Grotta Gigante and the Val Rosandra as exceptional natural sites near Trieste. These locales provide unique experiences for those interested in geological formations and outdoor activities.