The Castillo de San Cristóbal, one of the two forts in El Viejo San Juan.  Spain lost a lot in the Spanish-American war of the late 19^th century.  Both Puerto Rico and Guam became US territories after Spain lost them.

Atlanta Downtown

Castillo de San Cristóbal, one of the two forts in El Viejo San Juan

Dumbarton bridge over the South San Francisco Bay.