1.
Monastery or convent under the direction of an abbot or abbess.
2.
Roman public hall layout adapted into early Christian churches.
3.
Notched parapets atop walls used for defense and shielding.
4.
A church floor plan designed in the shape of a cross.
5.
A freestanding bell tower built adjacent to a church.
6.
A fortified medieval residence or stronghold for nobility.
7.
Architecture style during the reign of Charlemagne.
8.
The principal church of a diocese containing the bishop's throne.
9.
High wall section with windows raising above adjacent roofs.
10.
A building layout organized symmetrically around a focal center.
11.
Frankish king who revived imperial Roman-style architecture.
12.
Roman emperor who legalized Christianity and built early basilicas.
13.
Pattern of alternating open spaces and square defensive blocks.
14.
Holy wars that influenced medieval European military fortress design.
15.
Byzantine emperor who built the monumental Hagia Sophia.
16.
Historical period spanning from the fall of Rome to the Renaissance.
17.
Slender tower attached to a mosque used for the call to prayer.
18.
Wide water-filled ditch surrounding a castle to prevent invasion.
19.
Pattern or image made of small colored glass or stone pieces.
20.
Community complex where monks live, work, and pray.
21.
The long central aisle or main seating area of a church.
22.
Style featuring thick walls, heavy piers, and round arches.
23.
Style known for massive domes, pendentives, and gold mosaics.