I visited this tWHS in Spring 2021 focusing mainly on Patara apart from the already inscribed Xanthos. My thumbs down is not for the quality of the proposed sites, but because ideally this would be an extension of the already inscribed Xanthos-Letoon.
Patara is a perfect site to combine with a day at the beach. Several turtles use this beach as their nesting ground at night so when I visited I could see several signs and numbered posts indicating the numerous places on the beach where turtles had already laid their eggs. I parked just before the beach and hiked leftwards from the car park behind the sand dunes covered with vegetation following Google Maps to the ancient Roman lighthouse remains. It was easier for us as there was a crane at the site since a huge reconstruction project was launched in 2020, nicknamed the Year of Patara. For the time being only the huge three stepped base and a few huge stones of the 2,500 original ones are in place. The rest have been numbered and sorted around the base. It was great to be able to look out for the ones with Latin inscriptions on them (bottom right photo). The ancient lighthouse was devastated in 1481 due to an earthquake in Rhodes and a subsequent tsunami in the Mediterranean. The reconstruction project will use artificial intelligence to determine the original placement of the original stones and reconstruct the structure. More information and a computer generated photo is available on the Daily Sabah. I was the only one to venture so far away from the beach and main ruins when I visited and I was startled by "close encounters" with semi-wild and wild annimals; tortoises, oxen, and wild boars, the latter being quite dangerous even though I hurried away in the opposite direction at once.
The main ruins are scattered around what was once Harbour Street (top left photo) where there is a second smaller car park. Harbour Street connects the inner harbour to the agora in front of the bouleuterion. It is one of the widest and best preserved streets in Lycia. Both sides of the street are lined with Ionic order colonnades as wide as six meters. The colonnade on the east is made of granite while that on the west is made of marble columns. Behind the colonnades are the remains of various ancient trade shops. Another highlight is the heavily reconstructed assembly hall of the Lycian League overlooking the theatre on the south side (bottom left photo) with several inscriptions. Displayed in front of it is a replica of the Abora IV reed boat which is believed to have been the vessel used for the expedition from Varna, Bulgaria to Patara. This expedition is believed to have tested the reliability of the maritime trade route between the Black Sea and Egypt.
One of the closest structures to the entrance gate is the recently restored great city gate, which is believed to date back 2,000 years. It is said to be unique in the world in terms of its water transfer duty as it had the task of transferring water as a reverse siphon (top right photo). Just behind the gate are a few Lycian tombs, a recurring remain in this region of Turkey. In Fethiye, one of the huge tombs is literally in the middle of a busy modern street as if it were a make-shift roundabout!