1. to make monumental; to create or establish as a monument or lasting memorial
Usage: chiefly British spelling; American English typically uses 'monumentalize'; formal, literary
2. to make something appear grand, impressive, or of great importance
Usage: formal, literary

Examples

• The city decided to monumentalise the historic battlefield with a grand statue.
• The architect's design monumentalised the entrance to the museum.
• They sought to monumentalise the achievements of the founding pioneers.
• The memorial was built to monumentalise the lives lost in the disaster.
• Public art can monumentalise cultural heritage for future generations.
• The inscription monumentalised the hero's sacrifice for the nation.