The Forest , The Beach , The River
Outside any where

In my sister house fucking her friend. And got caught..

In so many places I had sex. But most recently I have to say the house resort jacuzzi in Key West.

41.40338, 2.17403.Degrees 41°24'12.2"N 2°10'26.5"E.
Amazing sex here🤔

At home in my big wide bed with my wife under me

On the creek bank with people watching us

In the swimming pool at my old apartment complex.

A couple summers ago my girl and I went skinny dipping at sunset and swam out to an anchored swim raft on Seney Lake. Well, we swim/raced and I won. Climbing up to sit on the raft and let our feet dangle in the water, she gave me my reward and began to suck me.  Sucking lead to having sex right out there on the bobbing platform as the sun set and it became dark. Just as I began to launch into my ejaculation - BOOM! - over our heads a massive firework lit up the sky as it exploded! It was the beginning of the firework show for the Seney Lake Days Festival over in nearby  Willow River.  Talk about timing!

maili pillbox...Google that shit, sunset are amzing and definitely sets the mood

In the middle of a field, just after we got married.

Cayo santa maria.cuba on the beach me and my girlfriend at the time we watched from the 2 edges of the beach so as not to be seen or caught

Puerto Princesa, Philippines.

In a public park, out in the open.

Best location, the most recent one

Male saunas where there are lots of randy guys to fuck me and an audience to watch.

My most erotic sexual encounter was at the entrance to an adult theater where I was standing waiting for my eyes to adjust to the darkness. A guy came up behind me, reached around and groped my crotch. As my cock stiffened, he unzipped my jeans and reached in found I was going commando, and fondled my cock and balls. Then he unbuckled my belt,allowing my jeans to fall to my ankles as he unsnapped my shirt, exposing my naked body. He then masturbated me to a climax as six or seven others watched. Very thrilling experience and I would be delighted to do it again! Unfortunately all the theaters near me have closed.

At a sandy beach, knowing that others were watching.

Anywhere your having sexual!

Camping in the primitive area by a high mountain lake. We rolled around in the tent for a long time. Had sex a couple of times. Later we found out that someone else had camped about 50 yards away. My wife is a screamer I am sure that they heard us! Oh well!

In someone else's dorm room bed one night. Were partying in my room, and I don't know how we ended up there, but we ended up in someone else's dorm room, in their bed.

I think she didn't want to use my bed because when we came, she sprayed my lower body. Once my cum flowed out of her we got up and saw the cum/piss mess in the bed. She cleaned my dick off with a shirt that was on the floor, then used another one for her legs/pussy.

found out later who's room it was. He was a total dick that kicked some guy that was passed out at a party, so he was a piece of shit that deserved to go to sleep in a puddle of my cum and her piss.

On the beach at night while others watched

Sea Mountain Inn, in the Jacuzzi, doing my gf doggie style, in front of a dozen or so naked people. One gorgeous girl walked up and asked if she could watch closer. She said "nice cock" - we did her next.

Here [deleted image]

We had a converted big ship life boat. It had a main cabin in the middle and a small bedroom in the prow. We had it anchored in Dinner Key (Miami) great sex.

In a hotel room with my wife naked kneeling with one knee on each arm of a big black leather armchair with her bum toward me!

I wont claim I was the best place but probably most fun. I had sex with a lady friend once just across a small cove in a lake outside on a picnic table while about 5 people sitting on a bar back porch watched us. I stripped her naked got naked myself had her suck me the did her doggie and when I was ready to blow I had her turn and catch I I her mouth. Once we got through they gave us an applause and we took a bow naked for them got dressed and left. It was pretty fun.

Nice man a lady friend in what part of Monterey county may i ask

Best STR-8 ? was Nude beach path, off to side with the first MRS. There were at least 3 m/f couple and 4 single males stop and watch.[Fire Island]
Gay ? Hard to say with out being banned.

In a bedroom with my future mother in law watching TV in the room next door. I came so hard I almost fainted from trying to keep silent.

My ladyfreind went with me to an adult box store in Monterey, CA. We went into one of the booths and she gave me head while people watched through the holes in the wall. I came in her mouth twice while she sucked me with two hands.

in college room, on twin bed, entering my girl from behind for first time

On the lounge floor with my woman!

Maverick's Beach, Half Moon Bay, CA, with an amazing lady I worked with. Watching the sunset, when it wasn't going off!
Just cuddling, and drinking some home-brew!!

On the seat of my truck at the drive in theater while being watched by others

At an all male orgy with 8 other guys.

in an adult store . sucked off by 6 guys took 2 hours or so.

The butt. The butt is ALWAYS a great location to have sex.

On the bank of a lake and beside a river.

On the beach beds at Desire Riviera Maya.

Old Ruin of a Castle And this Lady on my Side [deleted image]
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A women's prison

on the alter of a church. was amazing

On stage in an outdoor music pavilion on a rainy summer night. For those familiar with Cincinnati it was Seasongood Pavilion in Eden Park. We could see cars going by on Art Museum Drive a couple of hundred feet away.

On another occasion on stage at the Marx Theater, also in Eden Park. It was still under construction, but wasn't totally secure. Another gentleman and I managed to find our way inside and did the deed on stage.

Does sex by yourself count? I once did it in front of a big open window facing a busy street. I was on an upper floor, so no one noticed, but it was still super exciting

any members of the 'Mile High Club' here?

In a busy motel parking lot in my truck which was a rocking

First...church
Second...classroom

It was a very long time ago, but with my 2nd wife neat the top of Mt. Sherman (just at 14,000').

A very quiet cinema and my boyfriend gave me a great blow job . we often rub each other while watching a movie , but that particular time he went down on his knees and sucked the juice out me

Well since you asked you should also answer.
When I was married I was the manager of a restaurant and my office had a two way mirror with a view to the bar, restaurant and front door. One busy night, all was going smoothly and my wife showed up and we went to my office to get something. We ended up naked (door locked) and having sex while we watched the front of the house. It was very erotic. We could see about 20 people while we had fun. That was the first time and it happened a dozen or so times after that.

Just a few feet off the side of a busy highway at night, on a blanket in the grass a couple feet below the end of a guardrail at one end of a brige - so the shining headlights of the cars didn't reach us.
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I just realized the title of the thread says "best" ...but I was thinking most exciting. Best... if I'm thinking of the most significant, would probably be in a bathroom very high up in the Empire State Building.