Postcard showing the Royal Palace in Tonga's capital, Nukuʻalofa. The wooden building was built in 1867 in ornate Victorian style. Although Tonga was a British protectorate until 1970, it maintained its sovereignty, and remained the only Pacific nation never to have given up its monarchical government, as was the case elsewhere such as in Tahiti and Hawaiʻi. The Tongan monarchy follows an uninterrupted succession of hereditary rulers from a single family stretching back hundreds of years. While the current king, Tupou VI, has been reigning for just over a year, his great-grandmother, Sālote Tupou III, reigned for nearly fifty years, assuming the throne when she was only 18, in 1918, until her death in 1965.
Tonga is famous (in the philatelic world at least) for its uniquely-shaped stamps. Seen here are three stamps from a set of five about fruit issued in 2001.