The partially constructed fort called Las Animas, southeast of Principe, lying on a low hill, partly built but useless and unarmed.

The old sea wall extending from near La Punta to the Plaza de Armas, unarmed, and useless except as a parapet for musketry.

The old arsenal, on the west of the inner bay, now used as repair works for ships, useless for defense.

The old artillery and engineer storehouses near La Punta, probably once used as strongholds, now mere storehouses for munitions of war.

There are, besides, in the vicinity of Havana, three old and now useless stone works—­one at Chorrera, the mouth of the Almendarez River, about 4 miles from Havana harbor; another at Cojimar, on the coast, about 3 miles eastward of Cabana, and the third at the inlet called La Playa de Mariano, about 7 miles west of Havana.

Batteries Nos. 1 and 2 were equipped with, No. 1, four Hontoria 6-inch guns; two Nordenfeldt 6-pounders; No. 2, two Krupp 12-inch guns; four Hontoria 3-inch mortars.  The 12-inch Krupps were to stand off battleships attempting to force the harbor, or to bombard the Morro.  The Valago battery, a part of the Morro, an out-work on the edge of the cliff, mounting four 11-inch Krupp guns separated by earth traverses.

The Morro, commenced in 1589 and finished in 1597, is important for historical associations.  It is a most picturesque structure, and is useful as a lighthouse and prison, and is mounted with twelve old 10-inch, eight old 8-inch, and fourteen old 4-inch guns.

Cabana, finished in 1774 at a cost of $14,000,000, lies some 500 yards southeast of El Morro, on the east side of Havana Bay.  Toward the city it exposes a vertical stone wall of irregular trace, with salients at intervals.  Toward the Morro is a bastioned face protected by a deep ditch, sally port, and drawbridge.  Eastward and southward a beautifully constructed land front incloses the work.  This front is protected by ditches 40 or more feet deep, well constructed glacis, stone scarp, and counterscarp.  Cabana is a magnificent example of the permanent fortifications constructed a century ago.  Probably 10,000 men could be quartered in it.

The entrance to Cabana is by the sally port that opens upon the bridge across the moat lying between Cabana and El Morro.  Upon entering, the enormous extent of the work begins to be perceived, parapet within parapet, galleries, casemates, and terrepleins almost innumerable, all of stone and useless.  There are no earth covers or traverses, and no protection against modern artillery.