The five below are of ceramics at various other Lisbon subway stops. (BTW, the Lisbon subway was a clean and efficient, and even I could understand every stop name when announced - Chicago EL drivers need not apply.)
Below, a ceramic mural on the exit/entrance of an auto tunnel in Porto, Portugal.
And to the left and below are pictures of the huge, mainly open air, modernistic Oriente train station in Lisbon (and once again, the Portuguese, and the Spanish railway systems are ones that we would do well to emulate in the US - fast, clean, efficient, smooth riding and always on-time). The pictures show the open air hub area with tracks and boarding on the top floor to the right and left.
Lastly, below are several pictures of a fascinating, fishnet like sculpture that appears at first glance to hang in the air unsupported - in a roundabout on a fishing village's seafront area in Matosinhos, outside of Porto. It is titled "She Changes" and was designed by Janet Echelman, an American artist.