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The Arch of Galerius and its nearby Rotunda, are ancient monuments built in the early fourth century. The complex to which they belonged was built during the reign of Emperor Galerius (305-311). During its existence, the Rotunda was used as a pagan temple (early fourth century), a church (late fourth century-1590/1912-), a mosque (1590-1912). It is a UNESCO World Heritage Site since 1988.

Rotsund Chapel is a long church from 1932. The architect Harald Sund designed the church. During the Second World War, the chapel was requisitioned by the German forces and used as accommodation. The altarpiece in the church was destroyed.

St. Martin's Cathedral in Rottenburg am Neckar was built from a 13th-century chapel whose Romanesque tower still projects into the church's choir today. The town fire in 1644 necessitated a fundamental reconstruction, which was completed with the consecration of the church in 1655. In 1821, a diocese was founded for the kingdom of Württemberg, and Rottenburg, as the city with the highest Catholic population, was designated as the episcopal see.

The Santa Maria Rotunda, built between 1833 and 1860, was inspired by the Pantheon of Rome to build its huge dome.

The rotunda of St. George and St. Adalbert at the top of Říp Mountain is a Romanesque rotunda, one of the oldest preserved buildings in the Czech Republic. The first written mention of the rotunda dates from 1126, but the building was founded earlier, perhaps around 1039, when the remains of St. Adalbert were transferred to Prague. The present appearance of the rotunda is the result of a purist reconstruction which took place in 1869-1881.

The Xewkija rotunda was built between 1951 and 1971. The present church was built to replace the old one which had become too cramped. This first church was kept intact throughout the construction of the new one so that worship could continue to take place. The church was designed according to the plans of the Maltese architect Joseph Damato.

Notre-Dame Cathedral has been extensively modified since the 4th century, thus explaining the lack of homogeneity. The building dates mainly from the 12th and first half of the 13th century.

The Medieval Synagogue in Rouffach was built in the 12th century. It is now in disrepair as only the front facade is visible.

The Church of St. Anne, also known as the Round Church, is a Roman Catholic church in classicist style located in the southern part of Esztergom. Its construction began in 1828 and was completed in 1837. The church was built on the initiative of Prince Primate Alexander Rudnay, who wanted the building to be a reduced copy of the Esztergom Basilica.

Even partially preserved, the Round Church of is a unique testimony of the First Bulgarian Empire and an exquisite example of early Byzantine architecture.