The phrase "monumental dimensions" is correct and usable in written English.
It is typically used to describe something as being of great size or scale. Example: The construction of the Great Wall of China was a project of monumental dimensions, spanning over 13,000 miles and taking over 2,000 years to complete.
Desiring that his palace match the vastness of his empire, Sargon planned it in monumental dimensions.
The debate reached monumental dimensions in those states with elections in 2008: Hessen, Bavaria, and Lower Saxony.
PAGE A16 COMPANY GIVES GIFT OF CLEANLINESS Think of them as a facial cleanser for a blemish of monumental dimensions, scrubbing pimples and age spots off the faces of Mount Rushmore.
Art historian Joel Upton writes that with its size, style, tone and composition, Christus painted "an Andachtsbild, given monumental, ciboriumlike dimensions".
Recently I have found Anish Kapoor particularly innovative for the monumental, sculptural dimension of his work, and the mirror effects that interact with the observer, overturning the image.
An exception to this rule was the epic of a complex conceived in the late Twenties and built at the beginning of the Thirties, monumental in the dimensions of the structure but just as severe in its shapes, and even solemn in its dismal grandeur, known since 1976, thanks to the novel by Yuri Trifonov, as Dom na nabereinoj (The house on the embankment).
"City" is a monumental architectonic work, with dimensions comparable to those of the National Mall, in Washington, D.C., and a layout informed by pre-Columbian ritual cities like Teotihuacan.
Mr. Macdonald's character, Willard Fillmore, is an oppressed servant of Virginia Crock (Elaine Stritch), a tyrannical baking tycoon and flinty tightwad whose monumental nastiness gives new dimensions to the term "queen of mean".
It was a monumental achievement.
China will probably be the world's largest economy within our children's lifetimes and a monumental force in every dimension of life.
Monumental Moneymakers Monuments are also economic assets.
