Good luck getting an unsecured loan for that amount of money. But even if you could get an unsecured loan, you wouldn't want one. "Unsecured" means that you have not pledged any specific piece of property as collateral for the loan (unlike a home mortgage or a car loan, which are "secured" by the house and car, and which the lender is allowed to seize if you default on the loan).
Unsecured loans always have very high interest rates (north of 13-18% annually), because the lender is taking a much greater risk. If you fail to pay the loan, the lender will have to sue you for the money, with no guarantee that they will be paid back.
You want a secured loan. Pledge your house or some other piece of valuable property as collateral for the loan, and you can get a much lower interest rate (as low as 5% in the case of home equity loans, which are secured by a mortgage on a house). Loans secured by a motor vehicle can get rates as low as 8-10%.