The choice of what to sketch is almost always a matter of personal preference. For me, I am drawn to subjects that are unique to a place. Here are two examples from Medellin, the city of eternal spring.
Just across from the hotel where we stayed in Medellin is the Museo de Arte Moderno, founded in 1978 but relocated in 2009 to the space of the Talleres Robledo, a steel mill from the 1930s. Onto to this historic structure was grafted a new addition through the collaborative efforts of 51+1, an architectural firm from Peru, and CtrlG, a firm from Medellin.
In the Medellin Botanical Gardens is the Orquideorama, which consists of 14 structures that rise like giant wooden flowers more than 50 feet into the air. Designed by Plan B Architects in 2006, the large canopies provide filtered sunlight and shelter for permanent and temporary exhibitions amidst the natural landscape of the gardens.