It is made of concrete, tile roofs, and wooden beams. There are lion pedestals on both sides of the arch, but only lions on one side the day I was there.
The street is open to cars on one side, and closed for about 200' on the other side, making a lovely plaza with great landscaping themes that will be subject of another post.
The lack of car traffic makes it easy to admire or photograph the arch.
The underside of the tile roofs are made of carved wooden supports.
The view from the side with an active vehicular road.