Who is the man who knew the secret of moving limestone like the ancient egyptians did building the pyramids.?

I'm not sure what decade he build his huge limestone garden that he dedicated to his wife, it may be the early 1900's. He knew the secret of moving huge rock on top of one another like the Egyptians did and built bed, table, love seat and large monuments for his wife.He never revealed his secret but it was a modern marvel. Anyone know who I'm talking about?