President Donald Trump visited Qatar and Saudi Arabia, where he was treated to grand displays and glitzy architecture by the Middle Eastern leaders. In Qatar, Trump was hosted at the opulent Lusail Palace and marveled at the white marble in the Amiri Diwan. In Saudi Arabia, he toured Diriyah, a giga-project adjacent to a UNESCO World Heritage site, and was personally greeted by Crown Prince Mohammed bin Salman Al Saud.