A monument is a statue, building, or something else created to commemorate a person or important event. They are often designed as artistic objects to improve the appearance of a city or place.
Nelson's Column in Trafalgar Square, London, commemorates Admiral Horatio Nelson.
Corcovado Hill in Rio de Janeiro, Brazil with Jesus Christ the Redeemer statue
The "Monument to the Discoveries" in Lisbon, Portugal, commemorating famous Portuguese explorers.
A monument in Lithuania at the Geographical Center of Europe
Monument of Flora in Szczecin, Poland