Траян жеңісінің ескерткіші: Адамклиси монументі

Monument in Roman Civitas Tropaensium commemorating Emperor Trajan's victory over the Dacians

The Tropaeum Traiani or Trajan's Trophy lies 1.4 km northeast of the Roman city of Civitas Tropaensium (near the modern Adamclisi, Romania). It was built in AD 109 in then Moesia Inferior, to commemorate Roman Emperor Trajan's victory over the Dacians in 106, including the victory at the Battle of Adamclisi nearby in 102. It was part of a monumental complex comprising the trophy monument, the tumulus grave behind it and the commemorative altar, raised in 102 AD for soldiers fallen in the battles of this region. The complex forms a triangular plan, the base being marked by the monument and the funerary tumulus while the upper point is the altar.

The altar was raised in 102 to honour the soldiers who died "fighting for the Republic" perhaps at the Battle of Adamclisi nearby in the winter of 101–102. The altar had a rectangular shape, 12 m long and 6 m high. In the vicinity fragments of 1.3 x 0.9 m slabs covered with inscriptions were discovered with a dedication, but the name of the emperor was not preserved the names of about 4,000 soldiers were written on it. Several hypotheses for the soldiers and general commemorated have been put forward, including the soldiers of Oppius Sabinus, defeated somewhere nearby. The mention of the cohort II Batavorum and probably of the Legio XV Apollinaris, as well as the formula missici (instead of veterans) usual for the first century BC indicates that the war must be dated to the era of Domitian and probably in the year 86, the campaign led by M. Cornelius Nigrinus.

The tumulus grave was also built in 102 shortly after the altar and contained the grave of a Roman officer killed in the battle in Adamclisi, possibly Oppius Sabinus.

In 1837, four Prussian officers, hired by the Ottoman Empire to study the Dobruja strategic situation, performed the first excavations. The monument was researched between 1882–1895, George Murnu in 1909, Vasile Parvan in 1911, Paul Nicorescu studied the site between 1935–1945, Gheorghe Stefan and Ioan Barnea in 1945. From 1968 the site was researched under Romanian Academy supervision.

On the monument was a frieze comprising 54 metopes. 48 metopes are hosted in the Adamclisi museum nearby, and one metope is hosted by Istanbul Archaeology Museum, the rest having been lost (There is a reference from Giurescu that two of them fell into the Danube during the transport to Bucharest).