Ah, yes, it's Valentine's Day. This means that those Cupidly inclined can send letters to love-theme-named post offices for either re-mailing or the application of special romantic cachets. Here's a News Release from USPS about the largest such operation, in Loveland, CO.
Loveland's Downtown Station was renamed Valentine Station a while back. Here's a photo of it from October 2008:
(Loveland's main post office and Valentine Station were the first two post offices I respectively visited in Colorado!)
For those curious, current Valentine's pictorials can be found in the Philately section of the [2/19/12] Postal Bulletin.
This year's crop includes a dual pictorial by both Romeo, MI and Juliette, GA; Romance, AR; Loveville, MD; Hartville, NY; and several Valentines across the nation (including Valentine, TX, which is being studied for closure as part of RAOI).