An apse is a semicircular recess, often covered with a hemispherical vault. Commonly, the apse of a church,
Smaller … See more

The domed apse became a standard part of the church plan in the early Christian era. See more

In the Eastern Orthodox Church tradition, the south apse is known as the diaconicon and the north apse as the prothesis. Various ecclesiastical features of which the apse may form part are drawn together here.
The … See more

• Ambulatory
• Architectural development of the eastern end of cathedrals in England and France
• Byzantine architecture
• Cathedral architecture… See more

• Spiers, Richard Phené (1911). "Apse" . In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 2 (11th ed.). Cambridge University Press. pp. 231–232. This has a detailed description of examples in the early church.… See more