Given the task definition and input, reply with output. In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Passage: In 1865, Burges met John Patrick Crichton-Stuart, 3rd Marquess of Bute. This may have resulted from Alfred Burges's engineering firm, Walker, Burges and Cooper, having undertaken work on the East Bute Docks in Cardiff for the second Marquess. The 3rd Marquess became Burges's greatest architectural patron; both were men of their times; both had fathers whose industrial endeavours provided the means for their sons' architectural achievements, and both sought to "redeem the evils of industrialism by re-living the art of the Middle Ages".On his succession to the Marquessate at the age of one, Bute inherited an income of £300,000 a year, and, by the time he met Burges, he was considered the richest man in Britain, if not the world. Bute's wealth was important to the success of the partnership: as Burges himself wrote, "Good art is far too rare and far too precious ever to be cheap." But, as a scholar, antiquarian, compulsive builder and enthusiastic medievalist, Bute brought more than money to the relationship and his resources and his interests allied with Burges's genius to create what McLees considers to be "Bute's most memorable overall achievement."
However occasioned, the connection lasted the rest of Burges's life and led to his most important works. To the Marquess and his wife, Burges was the "soul-inspiring one". The architectural writer Michael Hall considers Burges's rebuilding of Cardiff Castle and the complete reconstruction of the ruin of Castell Coch, north of the city, as representing his highest achievements. In these buildings, Crook contends that Burges escaped into "a world of architectural fantasy" which Hall describes as "amongst the most magnificent the Gothic Revival ever achieved.".
What are the specific names of the two buildings in which Cook contends that Burges escaped into "a world of architectural fantasy"?