Google Trips - Santander - find out what country this city is in and what region of the country it's in. Is it near the coast or in the mountains? Look under "Things to do" to find popular attractions. Click on Day Plans to see what they suggest for an itinerary. Look under flights. How long does it take to get there and how much does it cost? Look under "When to visit" to see the best time of year to go. What is the climate like then? Look under Nearby Places to explore to figure out if there are other places you might visit that are not too far away.
Trip Advisor - Santander - About section at top and photo give you a quick sense of what kind of a place it is. Play section tells you about attractions, Eat shows popular dishes at some restaurants.