Unlike Lisbon however, there is no traditionally gay neighborhood. There are a few gay bars, but no gay hotels.

The bars are known to have a typically laid-back and party atmosphere. There are also a few gay-friendly spots such as "Aniki Bobo" where gays discreetly go to see and be seen, and to simply enjoy the night.
For more details about gay nightlife options in Oporto, see the list below.

BOYS ‘R US
Rua Dr. Barbosa de Castro, 63
Phone: 91 754 9988
boysrusclub.blogspot.com
Boys R Us is Oporto's best-known gay club located for over a decade right in the center of the city (it's close to Clerigos Tower). It is open on weekends until 2h30AM but the dancing goes on until 4. Expect plenty of flashing lights, loud music, and dancing queens (and the occasional drag show). Despite the name, girls (read: lesbians) are also often part of the crowd.

LABIRINTO
Rua Nossa Senhora de Fátima, 334
Phone: 22 606 3665
Classifying this as a gay-friendly straight bar or as a straight-friendly gay bar depends on who you ask. It's perhaps both, depending on the night. It's both a bar and an art gallery so any given night may be straight, gay, mixed, or whatever.
It's a couple of minutes walk from Casa da Musica, so it's a nice destination after a concert there. Admire the current exhibition and then head for the garden or one of the bars. It opens at 9PM and often stays open until sunrise on weekends.

MOINHO DE VENTO
Rua de Sá de Noronha, 76-78
22 205 6883
This is the gay hot spot of the moment, located in a medieval building. It is especially crowded on weekends (although only past 11PM or midnight), with a bar area and a dancefloor.