Google Maps guided us in the right direction…2.4 KM from our location within the Walled City. Interesting street art in Getsemani neighborhood. Crossing the bridge gave a great view of the water. Sad to see locals with children living in poverty along the banks of the river.
We decided to without a guide. $10.00 each to enter. Posters of information pointed us in the right direction. For a break we stopped and watched the video explaining the history of the battles and construction of the Castle. Cartagena was a desirable conquest for enemies of the Spanish Crown and pirates as well. In 1536 the castle was constructed on San Lazaro Hill to prevent attacks.
Took a look at the hidden tunnels …only briefly. The tunnels are more than 600 meters long.
The steps to the top are worth the climb. Amazing view area. Had we not gone in the morning, the area were we were would have been congested with tourists arriving from Cruise Ships.