Richmond Palace in Braunschweig, Germany, was built in 1768/69 for Princess Augusta of England (1737-1813), who was the wife of Duke Karl Wilhelm Ferdinand and the sister of King George III of England.
Richmond Park was laid out at the same time in the style of a classical English country garden. This was perhaps an attempt to keep Augusta from getting homesick while her husband was off commanding his army or cavorting with his mistress.

Looking in through the window
Both the palace and the park were named after the English town of Richmond (now a part of London), because that is where Princess Augusta grew up.

Gate with A for Augusta
The gates to the palace grounds are all decorated with a golden crown and an ornate letter A for Augusta.

The palace from across the Oker River, with two cyclists on the river bank
The Palace had to be re-built after the Second World War. It is now in good repair and has been freshly painted. It was locked when I was there, but it can be rented for weddings, receptions and other events. On some Sunday mornings (every second Sunday more or less) there are guided tours through the palace.
My photos in this post are from 2007. I revised the text in 2018.
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Congratulations on yet another milestone Don