Board your motorcoach and travel the short distance from Kirkwall to the Standing Stones of Stenness, a henge monument some 100 feet in diameter. Only four stones remain standing from the original ring. Like the nearby Ring of Brodgar, the Stones at Stenness appear to have aligned with the sun and moon at solstices and equinoxes. Continue along Scapa Flow, the base for the Royal Navy's Home Fleet during two world wars. Cross the first Churchill Barrier and visit the Italian chapel, built by Italian prisoners brought to Scapa Flow to work on the harbor's defenses. During their sojourn, they built the Chapel out of two leftover Nissen huts. The Chapel features delicate wrought-iron tracery and frescoes painted by artist Dominico Chiocchetti. (Chiochetti returned later to restore his improvised fresco work.) The Chapel remains one of most visited spots in the Orkney Islands.