A Hopf link
The tails of these animanls form an Hopf link on the capital of S. Ambrogio church, in Milan.
You can see also a detail.
© matematita
The image belongs to the sections...:
Knots in the city and outside the city (Topology)
Pillars, columns and capitals (Anthology of images)
S. Ambrogio (From the exhibitions of matematita)
