I guess there are some coins about real estate that could solve your problem. Simply do some research and you can find them but if you don't see the coin you want then I suggest to sell that land for money and you will use that money in exchange to cryptocurrency. Just bear in mind that don't buy a single crypto, diversify your investment so that it will not give you a hard time thinking of what is happening on your investment. Its better to have a contingency plan than none.