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One of the aims of this museum is to provide visitors with the opportunity to discover websites around the world which cover areas closely related to the subject of toy forts and castles.
Below you will find a number of suggestions, which might interest, excite or amuse you.  All are of a quality that the curator feels is compatible with his own, ie: the best he can find anywhere.  Only really great sites qualify. 
Bill Sarjeant is Nidum Toys.  He makes modern toy forts which will surely be amongst the most sought-after collectors items of the future in this field.
If you have an interest in actual castles, then there can be no better site on which to find out more about the real life thing. 
This is Bill Hocker's website.  He manufactures the most spectacular range of modern toy soldiers in 54mm size suitable for the most discerning collectors. 
James Opie is one of the world's leading authorities - if not the world authority on old toy soldiers, - especially Britains.  This is his personal website, including extensive coverage of his work at Bonhams.
The curator is always on the look out for websites to add to this list, so if you have a favourite which you would like to suggest, please e-mail him, using the contact shield at the bottom of the tower to the left of the screen.