Seriously — beautiful setting and remarkably well behaved horses given how many of them are in that space. This is a video you have to watch several times to see what all the horses are up to.
The video is filmed at the Hollandsche Manege in Amsterdam. The oldest riding school in the Netherlands, it was founded in 1744. The current building, which was inspired by the Spanish Riding School in Vienna, was built in 1882 and is a national monument.
The school is still used for lessons. Can you imagine riding in that amazing arena with the light streaming through those windows? The video below shows the entrance to the building and a lesson in progress.