In Trinidad you can still find houses built in the 17th and 18th century. You can easily distinguish between these houses: the houses built in the 17th century have wooden window gratings, while the window gratings at houses built in the 18th century are made of metal.
Another interesting thing is the good optical shape of the houses. The government grants the colorful painting to the house owners for i.e. good work (a reward system idea in communistic systems). But, here it works. As you can see, nearly all houses in the old town of Trinidad (and also in the other cities I visited) the houses are in good shape.