After the British invasion of Chesapeake Bay, in 1814, when they burnt the Capitol and White House at Washington, it was quickly decided that no foreign foe should be again permitted to do such a thing, and that an elaborate work should be built to defend the entrance to the bay. General Simon Bernard, one of Napoleon's noted engineers, offered his services to the United States after the downfall of the Emperor, and he was placed in charge, with the duty of constructing, at the mouth of James River, a fortification which would command the channel into that river and to the Norfolk Navy Yard, and at the same time be a base of operations against any fleet attempting to enter the bay and menace the roadstead. Bernard built in 1819, and several following years, an elaborate fortress, with a broad moat and outlying water-battery, enclosing eighty acres, the ramparts being over two miles in circumference. It was called Fortress Monroe, after the then President James Monroe, of Virginia. Out upon an artificial island, known as the Rip-raps, built upon a shoal some two miles off-shore, and in the harbor entrance, the smaller works of Fort Wool were subsequently constructed, and the two make a complete defense for the Chesapeake Bay entrance. During all the years this fortress has existed it has never had occasion to fire a gun at an enemy, but its location and strength were invaluable to the North, who held it during the Civil War. It is the seat of the Artillery School of the army. To the southward, at the waterside, are the hotels of Old Point Comfort, which is one of the favorite seaside watering-places of the South. In front is the great Hampton roadstead, usually containing fleets of wind-bound vessels and some men-of-war. NORFOLK AND ITS NEIGHBORHOOD.