This isn’t a location that shows up on quite a few lists, but we actually appreciated this working experience. Known as the “Sistine Chapel of Madrid,” the inside of this tiny church is covered with colorful frescoes. At this time, tickets can be obtained onsite only (no advance online sales). https://www.kinship.co.uk/dog-lifestyle/what-to-do-with-your-dog-when-you-go-away-on-holiday