I have been fortunate to visit Saint Petersburg twice, once each in autumn and spring! I never fail to be filled with wonder by The Alexander Column, located in the centre of Palace Square.
The column is a single piece of red granite, 25.45 m (83 ft 6 in) long and about 3.5 m (11 ft 5 in) in diameter.
A contribution to the Lens Artists Challenge. More can be seen here