Any less known but cool places you want to visit one day?

Jeju-do (Jeju Island, South Korea) - especially to see Halla mountain.

Xi'an (China), along with the other ancient capitals of China (or what we would call China, today).

Other areas around Asia that were inhabited by the Mongols, Manchu/Jurchen, and other related groups. Separately, I'd also like to see the parts of Viet Nam, Cambodia, and Laos where Hmong people live.

Parts of India, such as Arunachal Pradesh because of the diversity and history of people living there (Tai, Monpa, Naga).

Locations that were formerly part of the Assyrian Kingdom along with areas from the Akkadian Kingdom.

I have an odd dream to visit Georgia (the country). I know extremely little about it, but the combination of language-geek attraction (Georgian is a totally out there language with its own script) and the absolutely stunning images of everything I see really makes me want to go.

Big Bend National Park in Texas is on my wish-list. I had a work trip to Austin and thought I could add it on staying over through the weekend, but turns out Texas is REALLY BIG and Big Bend is about a 7 hour drive from Austin. Also after researching it a bit more the park sounds enormous and to really do it right you need a couple days at least to explore. So, I will be going back when I have more time!

Bisbee, Arizona is also somewhere I'd like to stay for a month or so. I've heard it's a fun artists town with funky bohemian vibes.

Finally, my partner has never seen Maine so I'd love to take them to Acadia and then take the ferry over to Newfoundland.

Definitely the Sammezzano castle is on top of my list. Situated in Tuscany (near Florence) its owner had a crush for oriental culture. Thus, he decided to build this very peculiar castle in which each room follows a different arabic or middle-eastern architectural style. Pictures and more history here: https://www.homeinitaly.com/magazine/post.php?post_id=176.

Unfortunately it is privately owned and its kinda hard to register for a visit.

The Azores. They're virtually unknown here in the US, but they look like a nice place to take a vacation.

Numerous pre-historic era archaeological sites (eg. remote places in Tibet). Ruins yet to be unearthed (eg. Sumatra). Major ancient world sites (Nalanda, Silk Road oases) The initial locations of famous chemical syntheses. Specialist factories. CERN. Remote islands. Undersea trenches.

Futuleufu - Chile, I missed out on going there when I was there many years back, was keen to kayak there, but didn't have the time/money https://www.youtube.com/watch?v=3qmFqTPJ0d8

Zanskar, Leh - In Ladakh, Northern India, the grand canyon of asia. Ideally for a kayaking trip! http://www.purelandexpeditions.com/

The Channel Islands, and the surrounding parts of France (Brittany/Normandy).

In general I'd like to spend more time checking out the lesser traveled parts of France, Germany and the UK.

I really enjoyed visiting the United Nations building in New York. The tour was interesting and if they weren't in session they too you into the various meeting rooms.

The thing about lesser known but cool places is that part of what makes them cool is the lack of overtourism. Then by visiting you are potentially becoming part of the problem. Anyways, I'd like to visit Svalbard at some point. Sounds like a slightly surreal but beautiful place to visit

Botswana: it has some of the wildest and most spectacular safaris in the world.

I saw this picture on reddit a while ago, where there was a public bucket seat that you could use to cross a river. I saw this a couple years ago, but I would very much like to see it in person.

Lost Coast in northern California. The one day looks like it will be soon.

Well, I've already been, but Bacalar, MX. Amazing place.