What rooms are in a concentric castle?

Is a beach a result of erosion or deposition? What is the phone number of the C And D Canal Museum in Chesapeake City Maryland? What is Universal Studios ticker symbol? What are some common myths about the Bermuda triangle? What land region is glen canyon? What is the bottom of a canyon called? What is the pedestal footing? Which president sent troops to the Persian gulf in 1991? Which ocean does the island of haiwi lie in? When was Oceans Apart created? What is the length of Mount Everest in cm? Do nkiller whales live in the Arctic Ocean? Western boundary currents are deflected by the western coastlines of the continents? Was the Parthenon completely intact before World War 1? How high is Mt. Everest in meters? Abiotic factors in the everglades? When was the Parthenon in Nashville built? Where is mtrushmore located and what presidents are carved into it? Does Alberta have any great lakes? What major city is 300 miles east of Houston along the Mississippi River?

What rooms are in a concentric castle?