The document discusses several historical monuments from the colonial era in Sri Lanka, including the Dutch Hospital, Katuwana Fort, Wolvendaal Church, and Dutch Reformed Church of Kalpitiya. It provides background on Sri Lanka's colonization by the Portuguese, Dutch, and British between the 16th and 20th centuries. Several structures from this period that still stand today reflect the architectural styles of their colonial builders. The document concludes that the colonial era left an important mark on Sri Lanka's history that can still be seen in the numerous surviving monuments across the country.