Fruit stalls in front of the Jose Castillo Tielemans Municipal Market, San Cristobal de las Casas, Chiapas State, Mexico

Sentry nook on castle roof, Castillo San Cristobal, San Juan, Puerto Rico, San Juan, Puerto Rico, Puerto Rico

Stack of cannon balls on castle roof, Castillo San Cristobal, San Juan, Puerto Rico, San Juan, Puerto Rico, Puerto Rico

Stone archways in castle, Castillo San Cristobal, San Juan, Puerto Rico, San Juan, San Juan, Puerto Rico

Castillo San Cristobal, San Juan National Historic Site, a national park in Old San Juan, Puerto Rico