The Aachen Cathedral, built on the former Palatine Chapel of the Palace of Charlemagne (800-814), is the most important architectural example of the Carolingian Renaissance. The Aachen Cathedral is a heterogeneous structure, influenced by many stylistic epochs, characterized by numerous breaks and extensions. To symbolically anchor their reign in the wake of that of Charlemagne, a large portion of the rulers of the Holy Roman Empire, between 936 and 1531, were crowned here.
First women's abbey in Saintonge, the Ladies' Abbey was founded in 1047. These powerful Benedictine moniales printed currency and had a taste for business.
The Abbey of St. Gall, called Kloster St. Gall (founded in 719, abolished in 1805), is the oldest monastery in Switzerland. Its Rococo library is one of the most important monastic libraries in the world.
The Abbey of Santa María la Real de Las Huelgas, is a monastery of Cistercian nuns of San Bernardo. It was founded in 1187 by King Alfonso VIII of Castile and his wife Leonor de Plantagenet. It houses works of great value, including some of the oldest stained glass windows in Spain.
The abbey Saint-Victor of Marseille was founded in the 5th century by Jean Cassien, near the tombs of martyrs of Marseille, among whom Saint Victor of Marseille († in 303 or 304). For more than 1,500 years, Saint-Victor is one of the high places of Catholicism in the south of France, and although the monastery was dismantled at the Revolution, the church is still assigned to worship. The abbey is classified as a historical monument since 1840.
St. Boniface is a Benedictine monastery founded in 1835 by King Ludwig I of Bavaria in a Byzantine style.
The Achel Abbey was first built in 1656 as a chapel and soon became a hermitage (1686). In 1846 the building was converted into a priory, and to a Trappist abbey in 1871.
The connected island of Agios Ahillios is a site steeped in history. Indeed, in the 10th century, this islet was one of the centres of Bulgarian imperial power, at which time it preserves the massive ruins of the Basilica of St. Achilles. South of the site are still several other churches and monasteries.
The Agios Eleftherios church was built in the early 13th century. This date, however, is the subject of debate, some historians claiming that the church could be older (twelfth, eleventh, even eight centuries). This Byzantine temple was built on the ruins of an ancient temple dedicated to the worship of Eileithyia.
The Agios Georgios church in Athens is a nineteenth-century reconstruction of a medieval temple. The Greek-Byzantine style of the temple is typical of the reign of Otto I (1832-1862) during which the temple was rebuilt after being destroyed during the Revolution of 1821.