The bust of Peter the Great by Christian Daniel Rauch is found in Brussels Park.

While in Brussels, Peter lived in this park in the Emperor’s House in 1717. The building was then demolished in 1778.

The bust sits on an octagonal pedestal made of artificial marble. On the rear,  there is an inscription in French engraved in gilt letters: “Érigé en l'honneur du czar Pierre le Grand et en mémoire de son séjour à Bruxelles en 1717” (which translates into English as “Erected in honor of Tsar Peter the Great to commemorate his stay in Brussels in 1717”).

References:

• Dubreucq, Jacques. Bruxelles 1000: une histoire capitale. Vol. 7. - Bruxelles: Jacques Dubreucq, 1999. - P. 278.
• Gachard, M. Le voyage de Pierre le Grand dans les Pays Bas Autrichiens, en 1717 // Idem. Etudes et notices historiques concernant l’ histoire des Pays-Bas. - Bruxelles: F. Hayez, 1890. - P.495 - 496.
• Renoy, G. Quartier Royal. - Brussel: Rossel, 1980. -  P.122, 126. (Bruxelles Vecu)
• The Statues and Monuments of Brussels / Editor Patrick Derom. - Antwerp: Pandora Publishers,  2000. - 364 pp.
• Bust of Peter the Great (Buste van Peter de Grote)
• Bust: Peter the Great in Parc de Bruxelles
• Commemoration of Peter the Great's Vomit. When you're a great Russian Tsar, even your vomit gets a statue