Antiguans claim to have a different beach for every day of the year and their island’s many beautiful soft, sandy beaches and coves certainly constitute its main attraction. However, for more energetic visitors, there is plenty to see and do away from the beaches. The islands are rich in colourful bird and insect life; off-shore, beneath the waters of the Caribbean, are splendid tropical fish and coral and there are several sites of historic interest. Nelson’s Dockyard in English Harbour is one of the safest landlocked harbours in the world. Clarence House, overlooking Nelson’s Dockyard, is the Governor General’s summer residence and is periodically open to visitors. Dow’s Hill Interpretation Centre provides visitors with a good overview of the island’s history including information on the early Amerindians and the impact of slavery on Antigua’s culture and economy. Shirley Heights and Fort James are two examples of the efforts made by the British to fortify the colony during the 18th century. St John’s Cathedral, originally built in 1683, appears on postcards and in almost all visitors photographs of the island.