Seaside limestone crag with easy access thought a stairway. Most of the easier routes (less than 6a) will be a bit polished but nonetheless worthy a visit. During the summer the sun shines strong on the wall so the temperatures might get a bit too high to fully enjoy the crag.
The access to the main sectors of Guia is made through a stairway between the Lighthouse and the water treatment plant. If you want to access Guia Nova, you should go inside Casa da Guia and through the end of the parking lot you'll find another stairway that will guide you to the walls. To get to Guia using public transports you can catch a bus near Cascais train station and you will be within a short walk.