Build a large wall around the entire perimeter of the property.

Construct a tall stone tower in the middle of the property and paint it completely matt black.

Poison the land around the tower, so nothing, not even grass can grow.

Have packs of wild, feral dogs roam the property.

Dress in dark grey robes, and spend the rest of your days on the top of the tower, screaming obscenities at any passers-by, or shaking your fist angryly at the sky.

What’s the legality of that land?

Where I live there’s no way a plot of land is suited for both farming and a Hotel.

If you build something in a place where residential/commercial buildings are not allowed you are in for a lot of troubles.

If the weather provides the safest bet for the most profit would probably be plant some easy trees or some plant that would not need a lot of caring, and just sell the products.

That for money. If I were you and I had money to throw I would just built a retire House for myself and collect my returns in peace of mind and health. But then again, residential buildings may not be allowed there.

Start a cult

I like the 2nd idea.

Sell it and remember that you first figure out what you want and then you buy the suitable land for it.

Boy do I have a lifehack for you

Plant potatoes. Charge rich families to come out and harvest potatoes as a “total farm experience”. Sell them as a “rustic handgrown” crop.

Take the profit and buy a shit ton of meth and smoke until your heart explodes. Die with a smile as you escape late stage capitalism ✨️

Firstly, you have an opportunity of a life time. Build a toilet with no cover, you get to shit like a modern person but with the calmness and stress-freeness of a cave person.

Honestly the vegan Yoga Retreat idea could be really cool. If I had a bunch of plans I would do a commune, although I’d rather do an Urban ecocommune personally but you have enough land to get some serious permaculture done. What sort of climate do you have?

Take a tupperware container set and test the water supplied to the field for PH value using a pack of litmus papers, then test the four corners and center of your field by scooping up some dirt, adding some water, and testing with litmus paper. Next, drain out the water and let it evaporate and look for signs of crystalization or condensates. Seal some of your soil samples to see if a healthy soil biome blooms in the sample, fungus and such.

A good healthy soil will have a strong biome. It and its water supply should be close to PH 6 to 7 for most tall grass and similar crops. There should be little to no saline in your soil, signs of that might indicate a brine pit forming in the water table near your land.

The most valuable single-season crops are crops that you can process yourself rather than selling to a granary. For examples: milled flour, corn byproducts, alcoholic ingredients, beets for sugar, bamboo, or switchgrass fermented into propionic acid biofuel. The major downside to being your own processor is that you’re also your own distributor which is very difficult.

Sometimes subsidies make unprofitable crops profitable, sometimes granaries or local brewers offer a good price for specific crops. Be sure to check the local market thoroughly.

Make sure to join up with any farming groups in your area and get insured for any farming you do. Also get somebody to provide some bee boxes.

Pawlonia trees. Fastest growing wood in the world

There’s some great ideas in this thread but sadly I think most of them are fairly high risk.

Doing anything in this kind of scope is going to cost a lot of capital. If it goes wrong all that money is gone.

I would lease it to a farmer.

Maybe reserve a corner where you can build up some basic facilities. I’m not sure what’s popular where you are but here in Australia you can find places like this on hipcamp where you can camp for a few dollars a day.

Use your income to build basic facilities over time. Toilets, showers, kitchen, solar.

Parking Lot

Put, like, three single family homes on it.

You could look into rewilding the land