A Short Hike

It’s a cute indy game about reaching the top of a mountain (no, not a Celeste clone i swear)

I don’t remember if it is in fact open world, but a game for just chill and take a long walk from start to finish is Firewatch

As you specifically mention Minecraft: check out Valheim. In default settings you can hardly call it a pleasant stroll, but exploring the biomes is beautiful with especially stunning lighting.

Guild wars 2, large world, lots of variety in scenery.

Also can try stuff where that’s the point like Wildmender is about healing the land and chill, or eastshade. Which is just about enjoying the scenery.

Take out all the people and creatures trying to kill you along the way and I feel like a walk down the intended route from Goodsprings to New Vegas would be fun enough and fairly pleasant. Otherwise, it’s a survival game nightmare I wouldn’t win, no matter how you slice it.

And if you’d consider Yooka-Laylee open world, the full first book you enter would be fun to stroll all over in for a short while. Especially since the majority of the enemies look like little pushovers.

Journey.
Abzu.
Planet Crafter.
Satisfactory.
I personally think it’d be cool to walk out on any of the fields in Rocket League

Gosh there’s so many though. Almost every game, haha.

As the game Raft is fun, fairly simple, huge, good for playing with friends or kids with out a ton of experience playing games, it’s got a decent story. Spent last summer beating it with my daughter and we both really liked it

World of Warcraft

I have high hopes for Light No Fire.

Right now I find Cyberpunk 2077 surprisingly pleasant to wander around in. Sure it’s dangerous, but when you’re so chromed to the gills you can shake off a high speed collision there isn’t much threat.

• A Highland Song. I can confirm that this one is nice to take a walk through because it is a game about running through a fictionalised version of a place I frequently enjoy walking through in real life. Possibly stretching the definition of open world a little, but the gameplay is about navigation
• Shadow of the Colossus. Which is good because you do spend a lot of time walking across it.

Also, not an open world game at all, but the environments in Pacer are amazing. You barely get a chance to look at them because you’re zooming along a racetrack at 400 mph, but they’re still there. Sonashahar is a futuristic neoclassical Indian city, and I want to explore that

Passage is a Zen simulation , which is a pleasant walk in an open-world, if that world is a line segment.

libregamewiki.org page (spoilers): Passage(2007)

Enshrouded, they have some great views and path you could follow.

You could try death stranding. It’s about walking and the journey.

Oh! The Long Dark, survival mode, on the easiest setting.

Epistory
 
They journey is kind of the point of the game, tbh.
It’s a typing game, btw. (Steam link)