Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: The building could accommodate many people.  The entrance hall alone was impressive, being wide enough to admit a hundred shoulder to shoulder.  But the building was owned by a billionaire and used only for his personal entertainment.  How would you describe this place?
large building
Exclusive, grand, large.