The city is poised on the west bank of the confluence of two rivers, so there are naturally a few bridges to cross. It is after the second crossing that you get to the oldest part of town, the monuments, and the best food.
In the center stands the Iglesia de San Pedro Apostol, austere but with some oil paintings of 15th-century merchant ships and a few side chapels. On the north end of town, near the coast, is the Ermita de San Telmo.
Between these two buildings, it is at the latter where you are likely to find throngs of tourists and the occasional tour bus. Sure San Telmo has a devoted following, but the majority of these tourists are snapping selfies at a famous film location (the wedding scene in the top-grossing Spanish film Ocho Apellidos Vascos). The same is true for the fountain and statue of San Juan Iturria.
San Pedro on the 29th of June.
Just over this second footbridge, the camino splits. The official camino continues straight ahead and upwards through town. The alternate route again follows the GR-121 by turning right. They rejoin within 3.5km.
The alternate route, known as the Ruta de Flysch because it crosses the sedimentary rock formations characteristic of this coast, is way marked and passes the Ermita de San Telmo. Both routes pass a public restroom shortly before arriving in Elorriaga.