More photos. Some merged, some not so merged.

The Compass strata and the arrowhead strata.

A low angle shot of one of the courtyard strata

A few attempts at merging images of the Courtyard pond, strata and sculpture (can you see the star?)

Did you notice the star on the edge of the pool?

Here's a photo of the pond, showing that it comes alive for part of the year.

Sculpture from above, which reveals what may be a manhole cover(?), and..

An aerial view.

Ok, one mystery solved. The larger hole is for a tree, as seen here (this is a different hole, seen when looking the other way).

An overview of the back of the courtyard strata, pond and bench.

Monet