Love is in the air, and the post, in the US city of Loveland

A special marks Valentine’s Day in Loveland (Thomas Peipert/AP)

Love is in the air, and the post, in the US city of Loveland.

Every year, tens of thousands of people from around the world route their Valentine’s Day cards to the “Sweetheart City” in Colorado to get a special inscription and the coveted Loveland postmark.