These are some interesting or non-native plants.
1st photo - This is an Acanthaceae plant with Pseuderanthemum-like white flowers. It may not have much ornamental value but it certainly is eye-catching.
2nd-4th photos - These photos show the red inflorescence of the uncommon Cocoloba.
5th-10th photos - This is a giant sage-like plant Cornutia grandifolia (common name: Tropical Lilac, Jamaican Lilac, Jam Lilac; Family: Verbenaceae). When crushed, the leaves emit the typical smell.
5th, 11th-16th photos - This is Tibouchina grandifolia (common name: Glory Flower, Large-Leaved Princess Flower) and a link is provided here: