The seven words are anagrams, with the first letter capitalised. They are cities from fantasy series.
Darujhistan, from Malazan, Book of the Fallen by Steven Erikson
The architects alluded to in the puzzle title (and the hints) are the authors, and going by hint 3, we need the authors' last names. In order, they are
The capital letter of each anagram was not in alphabetical order. This was hinting that the corresponding letter in the author's name should be taken
Erikson - E
Rearranging these gives arguably the greatest architect of all time
|The answer is: tolkien|