Ironically, the Vatican has very high border walls of them all. Maybe the highest in the world even. https://www.sheridan.com/wp-content/uploads/NL_vatican-city

Ironically, the Vatican has very high border walls of them all. Maybe the highest in the world even. https://www.sheridan.com/wp-content/uploads/NL_vatican-city-walls.jpg https://www.sheridan.com/wp-content/uploads/NL_vatican-city-...