The city of Pula is best known for its many ancient Roman buildings, the most famous of which is its 1st-century amphitheater, one of the largest and best-preserved buildings of its kind. Locally known as the Arena, it is still in use today during the summer film festival. During World War II, the Italians wanted to dismantle the amphitheater to bring it back to Italy. Due to the high costs, this project was quickly abandoned.

The caves of Postojna (or Adelsberger caves in German) are a 12.4-mile karst cave system, one of the largest in the world. With access to 3.3 square miles, the Postojna caves are the world's second-largest flowstone caves open to tourists. There is quite a bit of walking to do when visiting the caves, but the largest distance is covered by a specially made train that takes you underground.
The caves are very famous for their endemic olm: the largest troglodytic olm in the world. It will be hard to spot in the underground rivers, but you can see a few in aquariums, just before reaching the end of the visit in the immensely impressive underground hall. So huge that very large concerts have been hosted here in the past!

Although scarcely populated, island Cres has been inhabited since the late stone age. It's a long and narrow mountainous island stretching 66 km in length and between 2 to 12 km in width, featuring a spectacular array of pebble beaches and sheltered bays.

Krk was long thought to be the biggest island of Croatia, with an area of 405 km², until new data reveled that neighboring Cres is actually just as large. The northwest coast is steep and stony, the southern part of the island, however, embraces a mild climate and a landscape comprised of beaches, bays and forests. For obvious reasons, much of the island's tourism is in the south around Malinska and Krk city.

The Limski Fjord might be the most fascinating sight of the Istrian peninsula. The fjord is 9 km long and 600 meters wide. The steepest walls are up to 100 meters high. The water is deep green and is excellent for fish and mussel farming.

Risnjak National Park (ris means lynx in croatian) was declared as a national park on September 15th 1959. It covers 20 square miles and is located in the Western part of the Gorski Kotar Mountains. The highest peak is called Veliki Risnjak and raises 5000 feet above sea level. Located about 12 miles inland it offers, on a clear day, view to Kvarner Bay, the Naturpark Ucka, to the islands offshore and towards the North, a view of the mountain ranges in Slovenia, which form a natural border with Austria. The river Kupa originates in the National park, it follows the Slovenia-Croatia border for 70 miles. It is a tributary of the Save river, and does sonear Sisak, almost 200 miles from the source! This forested mountain massif is a wild life habitat to brown bears, wolves, lynxes, eagles and other protected animals.