This literature review focuses on combining spatial information communicated about a landmark and sentiment analysis techniques. In spatial information processing literature, the definition of a landmark remains elusive. We propose to have a study apply sentiment labeling models to landmark definition. However, instead of seeking an umbrella definition for the intangible landmark, it may be more relevant to classify individual landmarks re-cursively, using a methodology that accounts for its subjectivity. A goal to apply sentiment labeling models to the landmark definition