Discover what to do and what to see in Santander on our Hop on Hop off bus! Explore Santander with a City Sightseeing Tour. Let the open-top bus take you on an adventure! Hop on our red bus and discover the Palacio de la Magdalena ('Magdalena Palace') at bus stop 5. You can't leave without seeing it! Continue to bus stop 6 and visit the El Sardinero beach. At the first bus stop on our tour route you can see the Santander Cathedral.