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Title
1
Buckingham Palace
2
Windsor Castle
3
Abbotsford
4
Holyrood Palace
5
Lambeth Palace
6
Balmoral Castle
7
Watermouth Castle
8
Leeds Castle
9
Goodrich Castle
10
Maidstone Old Hall
11
Raglan Castle
12
Scarborough Castle
13
Carisbrook Castle
14
Dover Castle
15
Eaton Hall
16
Hawarden Castle
17
Osborne House
18
Hardwick Hall
19
Sandringham
20
Lowther Castle
21
Inverary Castle
22
Tower of London
23
Conway Castle
24
Warwick Castle
25
Chepstow Castle
26
Rothesay Castle
27
Kingsgate Castle
28
?
29
Ludlow Castle, No. 2
30
Irvine Eglinton Castle