The Byzantine church of the Holy Apostles is located at the start of Olympou Street, near the city's western medieval walls.
As evidenced by remnants of a column to the south of the church and a cistern to its northwest, it originally formed part of a larger complex. Consequently, it appears that the church was originally built as the katholikon of a monastery.
The date of its construction is not entirely clear: the founder's inscription above the entrance, the monograms in the capitals and other inscriptions refer to Nephon I, Patriarch of Constantinople in 1310–1314, as the ktetor. Another inscription on the eastern wall commemorates the same patriarch and his pupil, the hegumenos Paul, as first and second ktetores respectively. Recent analysis using carbon-14 however points to a later date for the entire structure, ca. 1329. A depiction of the hegumenos Paul kneeling before Mary, as well as a series of Marian scenes lead to the conclusion that the church was dedicated to Mary, perhaps to be identified with the Monastery of Theotokos Gorgoepikoos.
The building belongs to the type of the composite, five-domed cross-in-square churches, with four supporting columns. It also features a narthex with a U-shaped peristoon (an ambulatory with galleries), with small domes at each corner. There are also two small side-chapels to the east. The exterior walls feature rich decoration with a variety of brick-work patterns.
The interior gives a very vertical impression, as the ratio of height to width of the church's central bay is 5 to 1. The interior decoration consists of rich mosaics on the upper levels, inspired by Constantinopolitan models. These are particularly important as some of the last examples of Byzantine mosaics (and the last of its kind in Thessaloniki itself). Frescoes complete the decoration on the lower levels of the main church, but also on the narthex and one of the chapels. These too show influence from Constantinople, and were possibly executed by a workshop from the imperial capital, perhaps the same which decorated the Chora Church. They were probably carried out under the patronage of the hegumenos Paul, after 1314 or in the period 1328–1334.
With the conquest of the city by the Ottoman Turks, in ca. 1520–1530 the church was converted into a mosque with the name Soğuksu Camii ('Mosque of the Cold Water'). As was their usual practice, the Ottomans covered the mosaics and frescoes with plaster, after they removed the gold tesserae. The church's modern name, 'Holy Apostles', was not attributed to the building until the 19th century.
Restoration and the gradual revealing of the frescoes began in 1926. After the 1978 earthquake, the building was strengthened, and in 2002, the mosaics were cleaned up.
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Linderhof is the smallest of the three palaces built by King Ludwig II of Bavaria and the only one which he lived to see completed.
Ludwig II, who was crowned king in 1864, began his building activities in 1867-1868 by redesigning his rooms in the Munich Residenz and laying the foundation stone of Neuschwanstein Castle. In 1868 he was already making his first plans for Linderhof. However, neither the palace modelled on Versailles that was to be sited on the floor of the valley nor the large Byzantine palace envisaged by Ludwig II were ever built.
Instead, the new building developed around the forester's house belonging to his father Maximilian II, which was located in the open space in front of the present palace and was used by the king when crown prince on hunting expeditions with his father.