CHAPEL

The Chapel is a small, intimate place of worship. The name was originally applied to the shrine in which the kings of France preserved the cape (late Latin cappella, diminutive of cappa) of St. Martin. Any sanctuary that houses the relics was called a chapel and the priest cappellanus, or chaplain. There are various type of chapels such as Chapel withing churches, Bishop's Chapels, Chantry Chapel, Papal Chapel, Royal Chapel, etc.

ST. PAUL'S CHAPEL, NEW YORK
Picture taken from : http://www.pitt.edu/~medart/menuglossary/nave.htm

Acknowledgement: http://www.britannica.com/EBchecked/topic/106077/chapel
                              http://www.newadvent.org/cathen/03574b.htm