I guess by the "Keep the house and travel" you mean to rent it out, because otherwise, unless you have tons of money in your pension, you won't be able to afford to travel.
If you live in a big city you can sell your house, move outside the city and buy something nicer with more land, and have lots of money to travel with, so you could do both top options.
If your house has a suite in it, you might be able to live off that money, but the income is not a guarantee, so maybe when you are in Honduras on the beach you find out the people stopped paying the rent.