On your second day, venture out to the nearby city of Vigan, a UNESCO World Heritage Site known for its well-preserved Spanish colonial architecture. Start your day with a visit to Calle Crisologo, a cobblestone street lined with beautiful ancestral houses. Take a leisurely walk and soak in the old-world charm of the place. Explore the Syquia Mansion Museum, which offers a glimpse into the lifestyle of the powerful Syquia family during the Spanish era. Don't miss a visit to the iconic Vigan Cathedral, a stunning example of Baroque architecture. In the afternoon, take a calesa (horse-drawn carriage) ride around the city and visit the Baluarte Zoo, where you can see a variety of animals up close. End your day with a delectable dinner at one of the many local restaurants serving traditional Ilocano cuisine.