But here was the Bridge of Spain, originally built in sixteen hundred and something, the oldest monument to Spanish enterprise in the Islands. And across on the other side we came abreast of the inner wall of the city and whirled along awhile beside a wide, stagnant moat. From the inner side I got a better idea of what the Walled City was like, and I promised myself an early inspection of its mysteries. I wanted to walk across the old drawbridges and through the beautiful gateways which looked so ancient and were so suggestive of piratical and warlike history.