Mushroom.
A magnum is a large bottle, carboy's are another.
Sequoia
another word for very large
Methusela
A mansion.
very close
A synonym for a very large area within a continent is a region.
This answer is not very descriptive so I can not answer this question
behemoth
Another name that is very, very similar to the color of purple is violet.
Another name for a palace is a Mansion. A palace or Mansion is a very big house.