Fortifications built by Spain
ACAPULCO (Mexico)
ALABAMA (U.S.A.)
ARIZONA (U.S.A.)
BACALAR (Mexico)
CALIFORNIA (U.S.A.)
CAMPECHE (Mexico)
FLORIDA (U.S.A.)
GIRONA
GUAM
IRUN
JACA
LA HABANA (Cuba)
LINEA P
LOUISIANA (U.S.A.)
MEXICO CITY (Mexico)
MISSISSIPPI (U.S.A.)
MISSOURI (U.S.A.)
PAMPLONA
PANAMA CANAL ZONE
PHILIPPINES
PUERTO RICO (U.S.A.)
SAN SEBASTIAN
SANTIAGO DE CUBA (Cuba)
SOUTH CAROLINA (U.S.A.)
TEXAS (U.S.A.)
VERACRUZ (Mexico)