Solve the riddle

You can find me in the sun, the rain, the cold or the heat. If you do find me, rest assured, you've accomplished quite a feat. There are many way to find me, morning, night and noon. Many people have already found me, adn many more may soon. You can find me with your feet, bike, or a mighty steed. But find me and see me you should indeed. IF you ever get lost, ask a traveler fellow. Or look for the arrows colored in yellow. When you've arrived in Santiago, like a real viajero. Enjoy the bells and the botafumeiro, Though you may one day, be old and grey, You'll never forget how you found you way.