The Royal Palace on Dam Square is worth going inside for one room. The Citizens' Hall is a marble room that was open to anyone in the city, with maps of the known world and the night sky inlaid into the floor. Atlas carries the heavens overhead, and the whole room was built to tell a merchant republic how large its reach was. From outside the building gives none of that away: a heavy classical block, deliberately restrained, standing on more than thirteen thousand timber piles driven into wet ground.
It went up from 1648 as the town hall of a republic at the height of its wealth, to Jacob van Campen's plan. Louis Napoleon moved in as king in 1808, and it has been a palace ever since. Outside, Dam Square sits on the dam across the Amstel that the city is named after, and it is a crossing point rather than a pretty corner: trams, pigeons, buskers, half the city going through. The tall white column opposite is the national war memorial, where the country stands silent every fourth of May.