Definition: Buckinghamshire is a county in the south west of England, known for its rich history, picturesque landscapes, and its many historic buildings and monuments. The word "Buckinghamshire" is derived from the Old English word "kibbing" meaning "place with a stone bridge" or "place with a wooden bridge". It was first used to describe an area in England where King Edward I built his castle on the River Thames, hence the name Buckinghamshire. The county has a rich cultural heritage and many historic buildings such as castles, churches, gardens, and museums. The county is famous for its medieval architecture, including castles, towns, and villages. It also has several universities and research institutions that are recognized globally. Buckinghamshire is home to the Buckingham Palace, where the monarch of England resides, along with Buckingham House and the Buckingham House Museum. Other notable landmarks include St Paul’s Cathedral in central London, the Tower of London, and the National Gallery in London.