Šumber is a ruinous castle in the Eastern part of Istria, located in the municipality of Sveta Nedelja. It's 10 km away from Labin, and 8 km from Kršan. Šumber was destroyed in the local wars between the Venetia and Austria.
It's a small fortress with polygonal layout defended by two round half-towers in south-eastern and south-western part, next to which is on the west wall the main entrance to the fort. On the inner side of the southern wall are the remains of a long and narrow one-story palace, and another small house is located in the northeast corner of the castle. This is a perfect place for a quiet walk and exploring the nature and history.