Nuestros Hermanos [Ayamonte] Multi-Cache

Portuguese and spanish refer to each other as "Nuestros Hermanos" (our brothers).
This is due to the good relationship both countries have had for centuries.

This cache will take you to a small chappel near the Guadiana river shore. From here you can see Portugal across the river. 

The Cache:

On the small church carefully count the number of vertical iron bars protecting the window that is facing the river (=X).

7º24.( X + 229 )