Travelers are voting Pena National Palace, Castle of São Jorge and Queluz National Palace as the best of 3 palaces in Barreiro. There is 1 palace in Torres Vedras a city just 34 km from Barreiro. The most popular of these is Pena National Palace in Torres Vedras. You can find 4 palaces in Lisboa and 4 palaces in the country of Portugal. Our members favorite in Lisboa is Castle of São Jorge and Pena National Palace is the top pick in Portugal. Want more? Check out our map of palaces in Barreiro.