Monumental
Part of speech: adjective
Definition: in the manner of a monument. large, grand and imposing. Fitting to be a monument to someone or something. Taking a great amount of time and effort to complete
Example sentence: The cultural center of Asia Minor, Pergamon boasted a vast library of 200,000 scrolls, a spectacular 10,000-seat theater, and a monumental Great Altar decorated with sculptures of the Olympian gods defeating the Giants. People came from all around the Mediterranean seeking cures at the famous Temple of Asclepius, god of medicine.
Monolithic
Part of speech: adjective
Definition: Of or resembling a monolith.Having a massive, unchanging structure that does not permit individual variation.