The Valencia tourist and convention bureau has a ton of information for visitors including a link to purchase a Valencia Tourist Card. The card is good for free rides on public transportation and discounts on museums, restaurants and other attractions.  Be sure to check out the events calendar and info on the 2007 America's Cup race.

There are tourist offices at several locations throughout the city:  

TOURIST INFO VALENCIA- REINA
Plaza de la Reina, 19 46002 Valencia
infoturistica@turisvalencia.es 
Tel:   +34 963 153 931
Fax:  +34 963 153 920
SERVICES: Tourist information, Internet Connection, Sale of VLC Tourist Card, Souvenirs, Tourist Service bookings (Accommodation, Tickets for the City of Arts and Sciences, the Tourist Bus, Sailing Trips, Visits to the Albufera Nature Park, Horse-drawn carriage rides, Guided Tours of the Old Town, Bicycle hire, Theatrical night tours, etc.).
OPENING HOURS: Mon. to Sat.: from 9 a.m. to 7 p.m. Sun. and Public Holidays: from 10 a.m. to 2 p.m. 

TOURIST INFO VALENCIA- AIRPORT
Planta de Llegadas. Edif. Terminal (frente Cafetería) 46940 Manises (Valencia)
Tel: +34 961 530 229
Fax: +34 961 530 229 ?
SERVICES: Tourist information, Sale of VLC Tourist Card, Souvenirs, Tourist Service bookings (Accommodation, Tickets for the City of Arts and Sciences, the Tourist Bus, Sailing Trips, Visits to the Albufera Nature Park, Horse-drawn carriage rides, Guided Tours of the Old Town, Bicycle hire, Theatrical night tours, etc.).
OPENING HOURS: Mon. to Fri.: from 8,30 to 8,30 p.m. Sat.,Sun. and public holidays: from 9,30 to 5,30 p.m. 

TOURiST INFO VALENCIA- BEACH
Paseo de Neptuno, 2 (frente a hotel Neptuno) 46011  Valencia
Tel:  +34 963 557 108  or +34 963 525 478- ext.3987
Fax: +34 963 557 108 ?
SERVICES: Tourist Information, Accomodation bookings
OPENING HOURS: Mon. to Fri.: from 10 to 7 p.m. Sat.,Sun. and public holidays: from 10 to 6 p.m. 

TOURIST INFO VALENCIA- RENFE (RAILWAY STATION-NORTH STATION)
Játiva, 24 (Estación del Norte) 46007 Valencia
Tel: +34 963 528 573
Fax: +34 963 940 284
SERVICES: Tourist information, Sale of VLC Tourist Card, Souvenirs, Tourist Service bookings (Accommodation, Tickets for the City of Arts and Sciences, the Tourist Bus, Sailing Trips, Visits to the Albufera Nature Park, Horse-drawn carriage rides, Guided Tours of the Old Town, Bicycle hire, Theatrical night tours, etc.).
OPENING HOURS: Mon. to Sat.: from 9 to 7 p.m. Sun. and Public Holidays: from 10 to 2 p.m. 

TOURIST INFO VALENCIA- DIPUTACIÓN (TOWN HALL)
Poeta Querol, s/n (Bajos Teatro Principal) 46002 Valencia
Tel: +34 963 514 907
Fax: +34 963 519 927
SERVICES:  Tourist Information
OPENING HOURS:  Mon. to Fri.: from 9,30 to 19 p.m. Sat.: from 10 to 14 p.m. Sun.: from 11 to 14 p.m.  

TOURIST INFO VALENCIA- PAZ
Paz, 48 46003 Valencia
Tel: +34 963 986 422
Fax: +34 963 986 421
SERVICES: Tourist Information
OPENING HOURS: Mon. to Fri.: from 9 to 2.30 p.m. and from 4.30 to 8 p.m. Sat. and Sun. : closed Official Holidays: