Alexander Nevsky Cathedral in Sofia

The St. Alexander Nevsky Cathedral is a Bulgarian Orthodox cathedral in Sofia, the capital of Bulgaria. Built in Neo-Byzantine style, it serves as the cathedral church of the Patriarch of Bulgaria and is one of the largest Eastern Orthodox cathedrals in the world, as well as one of Sofia's symbols and primary tourist attractions. The St. Alexander Nevsky Cathedral in Sofia can hold 10,000 people inside.

Holy Trinity Cathedral of Tbilisi / Sameba

The Holy Trinity Cathedral of Tbilisi is the main Cathedral of the Georgian Orthodox Church located in Tbilisi, the capital of Georgia. Constructed between 1995 and 2004, it is the third-tallest Eastern Orthodox Cathedral in the World. Sameba is a synthesis of traditional styles dominating the Georgian church architecture at various stages in history and has some Byzantine undertones.

Hagia Sophia, Turkey

Source europeish.com

Hagia Sophia, was an early Christian church and later an Eastern Orthodox church. It was made into a mosque in 1453 by the Turks and changed into a museum in 1935. It is located in Istanbul, Turkey. It is often said to be one of the greatest, and most beautiful buildings in history.

View from the inside.

St Stephen's Cathedral

St. Stephen's Cathedral is found in Vienna, Austria. It has a clear Romanesque and Gothic form. The large place before it is called Stephansplatz (St. Stephen's place). It lies in the center of Vienna.

Basilica of Our Lady of Licheń

The Basilica of Our Lady of Licheń is a Roman Catholic church located in the village of Licheń Stary near Konin in the Greater Poland Voivodeship in Poland. It was designed by Barbara Bielecka and built between 1994 and 2004. The construction was funded by pilgrims' donations.

Basilica of Our Lady of Peace of Yamoussoukro

The Basilica of Our Lady of Peace of Yamoussoukro is a Roman Catholic minor basilica dedicated to Our Lady of Peace in Yamoussoukro, the administrative capital of Côte d'Ivoire. The basilica was constructed between 1985 and 1989 at a cost of $300 million. The design of the dome and encircled plaza are clearly inspired by those of the Basilica of Saint Peter in the Vatican City, although it is not an outright replica.