By their nature, monumental buildings can only be built by wealthy entities. Usually this means governments and religious orders, but in more modern times, corporations have also acquired the resources to build monumental buildings.
Size alone does not make a monumental building. A WalMart is large enough to be a monumental building but lacks all the other attributes. A monumental building must have features that go beyond purely practical function. They require quality materials, fine workmanship, and good design. They invariably exhibit generosity it their general arrangements.
The often carry towers, broad staircases, and ranks of columns. The entrance alone is usually sufficient to announce the importance of the building, and is invariably clear to a stranger approaching the building.
The roof line is often complex and often topped with ornamentation, turrets, and some marking or symbol that identifies the building's patron.
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