The castle is a rambling, grey-walled fortress with a series of rugged, cylindrical towers facing the waters of the Medway and looking over to the Chatham Dockyard Extension. Upnor was built in the time of Queen Elizabeth, as a defence of Chatham and Rochester, and seems to have justified itself in the reign of Charles the Second, during that inglorious war of 1667, when the insolent Dutch with sixty vessels took the fort at Sheerness, sailed up the Medway, burning and destroying, and later ascending the Thames to Tilbury Fort, humbled the ancient pride of the Mistress of the Seas. A chain was stretched across the Medway, from Hoo Ness to Folly Point, to bar the passage of the enemy to Chatham, and the men-o’-war _Matthias_, _Monmouth_, and _Royal Charles_ stood by, to help repulse De Ruyter’s forces. But the feeblest attempts were made: the Dutch broke the chain, burnt the ships, and continued up-river, capturing the _Royal Charles_, which was taken by two boats, under the command of one Captain Tobiaz, without any attempt at defence. Next morning, with the purpose of burning the large men-o’-war at anchor above Upnor, the Dutch sent up two of their fighting ships, with six fire-vessels, under cover of a heavy cannonade. Here Upnor Castle was of some service, and considerably hampered the enemy’s operations; but the fireships succeeded in burning the _Royal James_, _Loyal London_, and _Royal Oak_. And then, half-hearted themselves, the invaders retreated. It was well for us they were so cautious, for they might have done what they would. The observers of that time were not indifferent to this indignity. Evelyn, in his diary, styles it “as dreadful a spectacle as Englishmen ever saw, and a dishonour never to be wiped off”; and Pepys, Secretary to the Admiralty, was divided in three parts about it. He shared the general shame of the nation; he feared, as an official who might be held personally responsible, and thought dolefully of either being committed to the Tower, or else having his throat cut by a furious mob; and he dreaded, as a citizen, the dangers of an invasion affecting his property and ready cash. Opposite Upnor the naval activities of the dockyard are very noticeable. There you see battleships and cruisers dry-docked and refitting. When last I was here the waterside loungers readily told me their names. As to the correct rendering of one there was considerable variation, for while one would have it, “Airy-ale-house,” giving a pleasant mental picture of a hedgerow tavern of the type which would have pleased Piscator and Venator, others preferred to style her the “You’re-a-lias,” and some made it “You-rile-us,” which gives a distinctly threatening _nemo me impune lacessit_ kind of braggadocio turn to her proper title, _Euryalus_. There are other versions of the name--“Airy,” or “Hairy Alice,” for example--which prove the risks of classic nomenclature.