Havana, Cuba, Dec. 13-20, 2010.
There are 6 pages of photos from this trip:

Architecture
Miscellaneous: people, street scenes, etc.
Castles (this page)
Cementerio de Cristóbal Colón
José Fuster's house & neighborhood
The cars of Havana
 

Castillo de los Tres Reyes Magos del Morro, a.k.a. Morro Castle.
 

Views from Morro Castle.

Looking into Habana Vieja, with the Prado in the center, heading up towards the Capitolio in center left.

Castillo de la Real Fuerza (Castle of the Royal Force)

Panaramic shot from Castillo de la Real Fuerza.
Click here to see a larger version, 2k pixels wide.
(The original is 13k wide.)

More photos from this trip:

Architecture
Miscellaneous: people, street scenes, etc.
Cementerio de Cristóbal Colón
José Fuster's house & neighborhood
The cars of Havana