Bitter orange (Russian померанцевое дерево) is a symbol of Lomonosov, a town near St. Petersburg, Russia. Previously it was called Oranienbaum, which translates as orange tree from German.
Last year, when Lomonosov celebrated its 300 anniversary, a sculpture of bitter orange was erected:
It is situated in park of Lomonosov, in front of (Menshikov’s) Great Palace.
A similar fountain is located on the square: