        She took her time examining the pavilion, too.  The spindly supports seemed to be made of metal, although it was a type she had never seen before.  She knew that unpainted metal rusted, yet he seemed entirely unconcerned that it was sitting out in the rain.  Of the metals she knew, only gold and aluminum stayed untarnished in water, and both of those were far too expensive to have been used as a construction material.  There might be some alloys that had similar properties—it was just another question to ask when she got back home.  Alternately, it could be a strange new material that ponies hadn’t discovered yet, or could be made up of an element that didn’t exist in Equestria.  She wondered if there might be some way she could get a piece to take back to an alchemist.