This isn’t a place that shows up on a lot of lists, but we actually appreciated this expertise. Known as the “Sistine Chapel of Madrid,” the interior of this little church is covered with colourful frescoes. This is part with the Royal Palace but we are mentioning it separately since https://www.kinship.co.uk/dog-lifestyle/what-to-do-with-your-dog-when-you-go-away-on-holiday