### Clue: Crazy about noisy estate outside fantasy realm (5-6-4)
### Answer: CLOUD-CUCKOO-LAND 
 ### Explanation: Definition: fantasy realm
 CUCKOO(crazy/foolish) **contained in**(… outside) [ C(abbrev. for "circa"/about, when referring to specific years or time periods) + LOUD(noisy/roaring) + LAND(estate/grounds surrounding a dwelling) ].