Context: Encompasses both secular and religious styles, the design and style made by Muslims and their construction of buildings and structures in Islamic culture included the architectural types: the Mosque, the Tomb, the Palace and the Fort. Perhaps the most important expression of Islamic art is architecture, particularly that of the mosque. Through Islamic architecture, effects of varying cultures within Islamic civilization can be illustrated. Generally, the use of Islamic geometric patterns and foliage based arabesques were striking. There was also the use of decorative calligraphy instead of pictures which were haram (forbidden) in mosque architecture. Note that in secular architecture, human and animal representation was indeed present.

Question: What is considered the most important work of Islamic architecture?
Answer: the mosque

Question: What type of decorations are used in Muslim world decorative art rather than pictures?
Answer: decorative calligraphy

Question: What is the definition of haram?
Answer: forbidden

Question: Where in Muslim architecture are pictures forbidden?
Answer: mosque architecture

Question: Where is one permitted to use representations of humans?
Answer: secular architecture

Question: What either has a secular or religious style?
Answer: Unanswerable

Question: What is the tomp an important expression of?
Answer: Unanswerable

Question: Where is decrative calligraphy haram?
Answer: Unanswerable