If someone where to use the term "Adult Playground", what would you think it describes?

I would imagine something similar to a regular playground but with adult sized equipment.

Near to where I live there's a park with light exercise stuff for old people, like pedals in front of benches or wheels to turn using a crank or handle.

I would absolutely go to an adult playground, that sounds awesome
- Ya me too. I want an obstacle course with a climbing wall.
  And speaking of climbing walls, I really like them. Not just for climbing tho. I like the way they look.
  You seen that movie "Mountainhead". They've got this big room full of concrete and colorful climbing nubs. Just totally trippy and beautiful.

A sex thing
Las Vegas or similar places
An adult-size playground where everything's built for a larger person and all of the climbing toys that got removed sometime in the 80s-90s timeframe because of legal liability are back, too.

I'd pay good money, and sign whatever necessary, to get to relive the latter part of your third point. So many fun things got removed, not all of it for good reason....

I would hope that it would just be a playground just for adults. Don't know why people just lose their spark for playground shenanigans in age. I would love to climb and jump around again. But there isn't any place for that for adults.

A playground to run and climb and jump in that's made big enough for adults would be great.

I literally said this today, to my wife and I meant "an area exactly like a children's playground, but suitably large enough for adults to use".

Would kind of love this

Either a sex thing or an otherwise normal thing with booze

I'd add some drugs too just to be safe
- You're right, Viagra and birth control for everybody who wants it

Like a jungle gym and castle with slide and ball pit and the lot but scaled up to resist humans weighing up to 200kgs each

I don't know if it's still there, but when I visited the town of Ayr in Scotland about 25-ish years ago, they had a playground very similar to that right off of the beach. Everything was large enough to accommodate adults, and I think it may have actually been castle themed. No ball pit though. They did have a thing like a tilted merry-go-round that was at waist height and had no handles. Not sure what it's called, but it was probably the funnest and most dangerous single piece of playground equipment I think I've ever come across. There were about a dozen of us traveling together, and I don't think a single one of us walked away from that thing without catching a boot to the face at least once.

It would depend on the context. If I saw it on PornHub, I'd assume something related to porn. If I saw it in a flyer from the local Parks & Rec department, I'd think it was a standard children's playground, but for adults.

Simply by itself, I'd default to the park thing.

Depends on context of the conversation. Could mean something like City Museum in St. Louis, Missouri or it could mean a sex thing.

City Museum is an all-ages playground! Though I suppose anything can be an adult playground if you restrict it to adults.
Dude, I've been there and it is AWESOME!

So basically like Chuck E. Cheese or discovery zone from the 90s. Ball pits jungle gyms. Oooo or some American gladiator(especially the tennis ball guns) or ninja warrior type courses

A ball pit.

I want an adult-sized ball pit. Like 2m deep

A playground designed for a nursing home but actually good.

Maybe have a boxing station for bone health, a pool for low impact body movement and a kids playground in the corner to help keep the adults feeling safe and connected to their community by seeing the next generation running around laughing, screaming and having fun.

Some sort of sex thing
This comes to mind, even though its specifically for dads:

A swinger club or a rich person's dedicated fuck room.

https://digthisvegas.com/

Well, shit. Time for me to book a trip to Vegas.

Sex dungeon
Cool adventure park with more grown up activities.

BDSM room.

Somewhere where you break your bones. We ain't made of rubber like the kids

A place where unnecessary injuries and torn ligaments happen.

Alcohol availability and a series of fun activities that would accommodate chilling with friends or opportunities to meet and mingle.

BDSM gear

A casino. Or a brothel.

a gym

Specifically a crossfit gym

Opium den

One of those foam climbing areas but scaled up and with a bar

A regular playground scaled up by 2X in each dimension.

Is all my brain and body need

Las Vegas

Swinger club

Top Golf.

Sex swings, and other Adult adult equipment.
See #1

I think the Adult tag has been coopted to mean sex stuff. We did go do ziplines once, that was like a playground for grownups in a way, they don't use Adult in their marketing.

A pool with basketball hoops, climbing walls, volleyball nets and a swim up bar.

The destination in question could be very classy or very not, but it definitely sounds like they're trying to sell it to me.

Wasn't there a dark web child pornography site called the Playpen? That was the first thing that came in to my mind.

Something like a Barcade or axe throwing joint

So, this is definitely a playground for kids, but seeing as a fair few people mentioned playgrounds big enough for adults...

This one in Australia is accomodating enough for adults, many parents in there all the time

https://brisbanekids.com.au/bradbury-park-kedron/

New York

idk, ddlg or sumn

empty plot of asphalt with trashcan for cigarettes

Amsterdam has been described as an adult playground (and not in a good way), so that’s what I think of

Industrial bouncy house

My first thought is CSAM on the darkweb.