This sleepy provincial town is a great place for a layover while you're exploring the southeast. View the flashy frescoes of the Knights Hall inside the sturdy walls of Brežice Castle then stroll the main street, rimmed by well-cared-for Renaissance and late-baroque facades, and watch the world go by from one of the pavement cafes. The town's laid-back appeal is further enhanced by having the vast Terme Čatež resort right on its doorstep. If you're travelling with children, this hugely family-focused thermal baths complex makes Brežice the perfect pit stop for a day of downtime off the road.