foucault pendulum, Chile

I saw a pendulum at the science museum in london at age 12. impressive.

http://www.slate.com/blogs/bad_astronomy/2015/06/03/coriolis_effect_proving_it_does_work_differently_in_different_hemispheres.html

The Oregon Museum of Science and Industry - 0MSI had one for decades that knocked over little tiles to demonstrate the earth's rotation.  Here's the one at the Portland Convention Center.