Roman Catholic Diocese of Trieste

Trieste Cathedral (Italian: Basilica cattedrale di San Giusto Martire), dedicated to Saint Justus, is a Roman Catholic cathedral and the main church of Trieste, in northern Italy. It is the seat of the Bishop of Trieste. In 1899, Pope Leo XIII granted it the status of a basilica minor.

Astronomical Observatory of Trieste (Italian: Osservatorio Astronomico di Trieste or OAT) is an astronomical center of studies located in the city of Trieste in northern Italy.

The Jewish Museum “Carlo and Vera Wagner", is located in via del Monte 5/7, Trieste, Italy. It was inaugurated in 1993, by the initiative of Mario Stock together with the generous support of the Wagner-de Polo family.

Trieste ( tree-EST, Italian: [triˈɛste] (listen); Slovene: Trst [tə̀ɾst, tə́ɾst]; German: Triest [tʁiˈɛst] (listen)) is a city and seaport in northeastern Italy. It is the capital city, and largest city, of the autonomous region of Friuli Venezia Giulia, one of two autonomous regions which are not subdivided into provinces. Trieste is located at the head of the Gulf of Trieste, on a narrow strip of Italian territory lying between the Adriatic Sea and Slovenia; Slovenia lies approximately 8 km (5 mi) east and 10–15 km (6–9 mi) southeast of the city, while Croatia is about 30 km (19 mi) to the south of the city. The city has a long coastline and is surrounded by grassland, forest, and karstic areas. The city has a subtropical climate, unusual in relation to its relatively high latitude, due to marine breezes. In 2022, it had a population of about 204,302. Trieste is the capital of the autonomous region of Friuli Venezia Giulia and was previously capital of the Province of Trieste, until its abolition on 1 October 2017.Trieste belonged to the Habsburg monarchy from 1382 until 1918. In the 19th century the monarchy was one of the Great Powers of Europe and Trieste was its most important seaport. As a prosperous trading hub in the Mediterranean region, Trieste became the fourth largest city of the Austro-Hungarian Empire (after Vienna, Budapest, and Prague). In the fin de siècle period it emerged as an important hub for literature and music. Trieste underwent an economic revival during the 1930s, and the Free Territory of Trieste became a major site of the struggle between the Eastern and Western blocs after the Second World War. Trieste, a deep-water port, is a maritime gateway for northern Italy, Germany, Austria and Central Europe. It is considered the end point of the maritime Silk Road, with its connections to the Suez Canal and Turkey. Since the 1960s, Trieste has emerged as a prominent research location in Europe because of its many international organisations and institutions. The city lies at the intersection of Latin, Slavic and Germanic cultures where Central Europe meets the Mediterranean Sea, and is home to diverse ethnic groups and religious communities. Trieste has the highest percentage of researchers in Europe in relation to population. "Città della Barcolana", "Città della bora", "Città del vento", "Vienna by the sea" and "City of coffee" are also idioms used to describe Trieste.

The Trieste Commodity Exchange (Italian: Borsa merci di Trieste) was founded in 1755 by Empress Maria Theresa. It is one of the oldest commodity exchanges in the world.

Trieste City Hall (Italian: Palazzo del Municipio di Trieste) is the seat of the city and commune of Trieste in Italy.

Palazzo Modello is a historic building located on Piazza Unità d'Italia in Trieste, Italy.

Saint Spyridon Church (Italian: Chiesa di San Spiridione; Serbian: Црква светог Спиридона / Crkva svetog Spiridona) is a Serbian Orthodox church in Trieste, Italy.

The Teatro Lirico Giuseppe Verdi is an opera house located in Trieste, Italy and named after the composer Giuseppe Verdi. Privately constructed, it was inaugurated as the Teatro Nuovo to replace the smaller 800-seat "Cesareo Regio Teatro di San Pietro" on 21 April 1801 with a performance of Johann Simon Mayr's Ginevra di Scozia. Initially, the Nuovo had 1,400 seats. In 1821, it became known as the Teatro Grande. By the end of the 18th century, the need for a new theatre in Trieste became evident. Its main theatre, the Teatro di San Pietro, had become increasingly inadequate and closed in 1800. A proposal to the Austrian Chancery from Giovanni Matteo Tommasini to build a private theatre had existed since 1795 and, in June 1798, a contract was drawn up whereby annual funding would come from the municipality and Tommasini would hold the rights to several boxes and the rights to sell others. Gian Antonio Selva, the architect of the La Fenice in Venice, was engaged, and he designed a classic horseshoe-shaped auditorium. However, his exterior designs were considered to be too plain for the Austrians who then engaged another architect, Matteo Pertsch, to solve the problem, which was accomplished by incorporating elements of Milan's La Scala opera house. The "Nuovo" became a mixture of La Fenice on the inside and La Scala on the exterior.

Piazza Unità d'Italia (English: Unity of Italy Square) is the main square in Trieste, a seaport city in northeast Italy. Located at the foot of the hill with the castle of San Giusto, the square faces the Adriatic Sea. It is often said to be Europe's largest square located next to the sea. The square was built during the period when Trieste was the most important seaport of the Austrian-Hungarian Empire and includes the city's municipal buildings and other important palaces. Before 1919 it was known as Piazza Grande, or Great Square. The local Slovenes still refer to it as Veliki trg (Great Square), both in daily speech and in the media. In the last decade, the term Trg zedinjenja (Unity Square) or Trg zedinjenja Italije (Unity of Italy Square) has also become popular, especially in official documents.The square itself has occasionally been used as a concert venue, with Green Day using the square as a venue for a show on their 99 Revolutions Tour in 2013. The attendance was of 12,000 people. In 2016, it was used by heavy metal band Iron Maiden as a concert venue (it was the third of three Italian dates): the concert was sold out with over 15,000 fans.The square is also occasionally used for visits of foreign heads of state and meetings. In November 2013 President of Russia Vladimir Putin met Italian Prime Minister Enrico Letta there for bilateral talks. In July 2017 a trilateral meeting attended by Angela Merkel, Emmanuel Macron, and Paolo Gentiloni was held there, as well as the fourth Western Balkans Summit.

The Church of Sant'Antonio Taumaturgo (commonly known as the Church of Sant'Antonio Nuovo), is the main religious building in the Borgo Teresiano in the centre of Trieste as well as the city's largest Catholic church. It stands on a square also known as Sant’Antonio Nuovo, at the end of the Grand Canal.The building project dates back to 1808, but work only began in 1825. The church has a facade of ionic columns with six statues sculpted by Francesco Bosa in 1842, representing Saint Justus, Saints Sergius and Bacchus, Saint Servulus, Saint Maurus, Saint Euphemia and Saint Tecla.

The Canal grande (English: "Grand Canal") is a navigable canal located in the heart of the Borgo Teresiano, in the very center of the city of Trieste, approximately halfway between the railway station and Piazza Unità d'Italia.