One day I parked a little further away from work and walked a couple blocks, taking pictures along the way. It's fascinating to see all the ruins and vegetation growing around it... some of these structures are very, very old, and you see various stages of dilapidation because this small island has had many ebbs and flows of destruction and rebirth over the centuries.
This plot of ground obviously had some kind of building previously. Parts of the street are still lined with large shells (visible here at the bottom).
Moving to the right from there is part of the grand entrance way.
... and if you step up and onto the threshold and look in closer, you can see the remains of old pillars still sticking up through the overgrowth.
I left that block and walked down the street bordered by this wall, which I'm sure has been patched many times over the years, and which is due for more patches in some places.