Built in the 2nd century A.D., the amphitheatre was the setting for popular spectacles, such as fights between gladiator. Built in the second century A.D. on the shore of the Mediterranean sea, the amphitheatre held many popular events, including gladiator fights. It possesses the elliptical plan which is characteristic of this type of constructions. Beneath the sand, the setting for the spectacles, pits which were used for auxiliary services are situated. In the central part of the amphitheatre the remains of the plan of a Visigothic basilica are preserved (6th century) as well as those of a Romanesque-Gothic church from the 12th century.

The circus was built towards the end of the 1 A. D., possibly during the times of the Emperor Domician. The building was used for events such as chariot races. Functioning until its demise in the 5th century.

Three towers and several sections of the wall still remain intact. The Roman city wall is known as the archaeological walk. It was built in the latter stages of the 3rd century B.C. and the beginning of the second century B.C. Of the original wall only the upper area section is still standing. It still retains several sections of wall and three towers: Cabiscol tower, Minerva tower and Arzobispo tower. Minerva tower is the most typically Roman of all, while Arzobispo tower was modified during Medieval times.

Its construction began in 1184, over the remains of an old Christian basilica that, in turn, was erected on top of a 10th-century Arab mosque. It was made in Romanesque style, in transition to Gothic. The church has a Latin-cross plan, with three naves and an accentuated transept, over which stands an impressive octagonal dome. The naves end in three circular apses. On the main façade we see two remarkable 12th-century Romanesque portals, and a gorgeous rose window with openwork tracery. In the mullion of the portal there is an image of the Virgin with the Child. In the interior we can see the remarkable 15th-century high reredos, the work of Pere Johan. Made with polychromatic alabaster, its most striking feature is the trilogy of sculptures that represent the Virgin, St. Tecla and St. Paul. The Archbishop's Sepulchre, placed over the high altar, is one of the Gothic gems of this temple, as is the chapel of Santa María, which dates from the 14th century. At the Diocesan Museum, a wonderful collection of tapestries from the workshops of Brussels stands out, along with a reredos made by Jaime Huguet.

A major archaeological discovery. The necropolis was used as the city's cemetery from the Roman era until the 7th century. Archaeological excavations between 1923 and 1933 revealed the site of a major Paleochristian cemetery. This necropolis was used during the Roman era up until the 7th century. Remains of different pagan and Christian graves have been discovered, including sarcophagus, amphora tombs etc. The majority of these finds can be seen in Tarragona's Archaeological Museum.