The Garden of Limp Dicks is in Lisbon

This sign is posted on a building fronting a small triangular plaza on a neighborhood street near the Miradouro Santa Luzia in Lisbon.

Jardim das Pichas Murchas translates as Garden of Limp Dicks (or “Wilted Pricks").

The explanation is posted at reader Fletcher's blog:

The locals decided that since their plaza was a gathering place for old men, it required the name Jardim das Pichas Murchas, and even talked the Junta de Freguesia into accepting the name into the record books.

There's more background and a relevant link at his Oregon Expat .