A Fibonacci Heap is a type of data structure that allows for efficient priority queue operations. It is particularly useful in algorithms that require frequent merging of heaps, such as Dijkstra's algorithm for finding the shortest path in graphs. The structure consists of a collection of trees, where each tree follows the properties of a min-heap, meaning the smallest element is always at the root. One of the key features of a Fibonacci Heap is its ability to perform operations like insertion and decrease-key in constant time, while the delete operation takes logarithmic time. This efficiency makes Fibonacci Heaps advantageous for applications in network optimization and other computational problems where managing priorities is crucial.