The Archaeological Museum of Varna was established in 1887 by the brothers Karel and Herman Shkorpil (archaeologists and scientists of Czech and Bulgarian origin, founders of the Bulgarian archaeology and museum activity). The archaeological museum shows original finds from the Paleolithic Age /about 100 000 years BC/ to the Middle Ages /7th – 8th/ century, many of which are of great significance to the archaeology of Europe and the world. The largest Mesolithic collection of flint tools in South-East Europe, the largest collections of ancient terracotta, tombstone reliefs, lamps and glass vessels in Bulgaria are placed here. Unique exponents of the Hellenistic age, the Roman age and the Late Antiquity are presented; as well as rare premonetary forms, more than 2000 golden, silver, bronze and copper antic and middle age coins. Stone inscriptions from the history of the Bulgarian state are also presented; and also the largest in the country collections of early Bulgarian belt decorations and jewels dating from the Second Bulgarian Empire (1185 – 1393). http://visit.varna.bg/en/museums/preview/4.html

The oldest and best preserved monument of architecture since Roman times in Sofia is the rotunda church St. George. It was built in the beginning of the 4th century AD and, was considered, during the reign of the roman emperor Constantine the Great (reigned 306 – 337) and the flourishing of the ancient town Serdika (the old name of Sofia). It is believed that the rotunda is the oldest building in Sofia. The temple is situated in the courtyard of the Government Office, just a couple of meters of the remains of the ancient fortress Serdika. It is a cylindrical domed structure, built on a square base. Its width is about 9.5 meters in diameter and its height is about 14 meters. The altar room has a square form and four symmetrically placed niches. The main entrance is at the western wall. Originally the building was used for public purposes. After the recognition of Christianity as a religion in the Roman Empire, the rotunda became a baptistery (a building for conversion to Christianity), due to the many conversions, following the authorization of this religion. http://bulgariatravel.org/en/object/234/sofia