Six huts around the world, measuring the Earth’s wobble together
A small wooden building on DeSellum Avenue that spent most of a century measuring the wobble of the Earth. It went up in 1899 as one of six International Latitude Observatories, strung around the globe at the same parallel so that together they could track the drift of the planet’s rotational axis, and the six of them had to trust one another’s numbers to do it. It became a National Historic Landmark in 1989, named specifically as a testament to international scientific cooperation, which is a rare thing for a shed to be honoured for.
Other places on the map within a couple of hours of here.