The Memorial Temple of the Birth of Christ (Bulgarian: Храм-паметник „Рождество Христово“, Hram-pametnik „Rozhdestvo Hristovo“), better known as the Shipka Memorial Church or Shipka Monastery is a Bulgarian Orthodox church built near the town of Shipka in Stara Planina between 1885 and 1902 to Antoniy Tomishko's design in the seventeenth-century Muscovite style, under the direction of architect Alexander Pomerantsev. It is, together with the other parts of the Shipka Monument complex, dedicated to the Russian, Ukrainian and Bulgarian soldiers that died for the liberation of Bulgaria in the Russo-Turkish War, 1877-78.

The temple was officially opened on 28 September 1902 in the presence of Russian Army generals and many honourable guests. The opening and consecration of the Shipka Memorial Church concurred with the 25-year anniversary of the Battles of Shipka Pass. In 1970, the temple was proclaimed a national monument of culture.

The church's bell tower reaches a height of 53 m and its bells, the heaviest of which weighs 12 tons, were cast from the cartridges that were collected after the battles. In the temple itself, the names of the Russian regiments and Bulgarian volunteers are inscribed on 34 marble plates. The remains of the perished are laid in 17 stone sarcophagi in the church's crypt.

The Church of the Holy Trinity (Bulgarian: Църква „Света Троица“, Tsarkva „Sveta Troitsa“) is a 19th-century Bulgarian Orthodox church in the northern Bulgarian town of Svishtov and one of the finest examples of late Bulgarian National Revival church architecture.

A work of the best-known Bulgarian architect of the period, Nikola Fichev, the church was inaugurated on 19 September 1867 and constructed on the highest spot in the town. The three-naved church features a central dome and an elongated 30 m-long body with thin and high columns supporting the naves, as well as three smaller domes. The design of the façades is particularly remarkable. Fichev notably broke the Orthodox architectural canon by making the whole east façade a giant undulating apse.

The iconostasis, 16 m long and an average 10 m high, was created by Anton Peshev from Debar in 1870-1872 and the 73 icons were painted by Nikolay Pavlovich, a master from Svishtov. The belfry, stylistically a reference to Western European architecture, was added in 1883-1886 and designed by Gencho Novakov.

Several important figures, including the first Bulgarian Exarch Antim I (1872), the Metropolitan of Tarnovo Ilarion Makariopolski (1872) and the eparchial metropolitan bishop Clement of Tarnovo (1889) have held services in the church. It was also visited by Russian Emperor Alexander II, who attended the service on 28 June 1877. Alexander II also donated six bells for the bell tower.

The Church of the Holy Trinity suffered from an earthquake on 4 March 1977, but was subsequently restored and is today, together with its iconostasis, a monument of culture of national importance.

The Rock-hewn Churches of Ivanovo (Bulgarian: Ивановски скални църкви, Ivanovski skalni tsarkvi) are a group of monolithic churches, chapels and monasteries hewn out of solid rock and completely different from other monastery complexes in Bulgaria, located near the village of Ivanovo, 20 km south of Rousse, on the high rocky banks of the Rusenski Lom, 32 m above the river. The complex is noted for its beautiful and well-preserved medieval frescoes.

The caves in the region had been inhabited by monks from the 1320s, when it was founded by the future Patriarch of Bulgaria Joachim, to the 17th century, where they hewed cells, churches and chapels out of solid rock. At the peak of the monastery complex, the number of churches was about 40, while the other premises were around 300, most of which are not preserved today.

The monastery complex owes much of its fame to 13th- and 14th-century frescoes, preserved in 5 of the churches, which are thought of as wonderful examples of Bulgarian mediaeval art. The rock premises used by the monks include the St Archangel Michael Chapel ("The Buried Church"), the Baptistery, the Gospodev Dol Chapel, the St Theodore Church ("The Demolished Church") and the main Holy Mother of God Church, with the 14th-century murals in the latter one being arguably the most famous of all in Ivanovo and noted as some of the most representative examples of Palaeologan art. Many century-old inscriptions have also been preserved in the monastical premises, including the famous indented inscription of the monk Ivo Gramatik from 1308-1309.

The Rock-hewn Churches of Ivanovo were included in the UNESCO World Heritage List in 1979.

The SS. Forty Martyrs Church (църква "Св. Четиридесет мъченици", tsarkva "Sv. Chetirideset machenitsi") is a medieval Eastern Orthodox church constructed in 1230 in the town of Veliko Tarnovo in Bulgaria, the former capital of the Second Bulgarian Empire.

The SS. Forty Martyrs Church is an elongated six-columned basilica, has three semicircular apses and a narrow narthex from the west. Another building was added later to the west side of the church.

Some of the Bulgarian Empire's most significant historical records are stored in the church, including Omurtag's Column, Asen's Column and the Border Column from Rodosto and the time of Khan Krum.

The church was built and painted by the Bulgarian tsar Ivan Asen II in honour of his important victory near Klokotnitsa over the Despotate of Epirus under Theodore Ducas on 22 March 1230. A royal church during the reign of Ivan Asen II, it was the main church of the Great Lavra monastery at the foot of Tsarevets on the left bank of the Yantra River.

In the first years of Ottoman rule, the church preserved its Christian character, possibly until the first half of the 18th century. It was then converted to a mosque, with the mural paintings, the icons and the iconostasis being destroyed and alterations being made to the structure itself in 1853. Only a limited number of paintings are preserved, primarily from the northern half of the narhex's west side.

Archaeological research of the church began as early as the 1850s, but excavations were first made in 1906 and 1914, after it was badly damaged by an earthquake in 1913. The full independence of Bulgaria from the Ottoman Empire was proclaimed by Tsar Ferdinand on 22 September 1908 in the church.

Systematic archaeological research of the church started in 1969. In 1972, a royal burial of a 1.9 m-tall accoutred man was excavated that included a massive (61,1 g) gold ring bearing a heraldic image and the inscription Kaloyanov prasten (Калоянов пръстен, Kaloyan's ring) in negative. After extensive reconstruction works, the SS. Forty Martyrs Church was fully renovated in the 2000s and opened once again to the public.