Not a 'card' as such, but the combined ticket to the Museum of Byzantine Culture, Archaeological Museum, White Tower, Roman Forum and Galerian Complex-Arched Hall, will save history-buffs plenty. Valid for three days and obtainable from any of the museums involved, it's just €15/8 for adults/concession holders.
Free wi-fi zones abound, and many cafes and restaurants offer wi-fi for customers.
Except in Ano Poli, banks and ATMs are widespread. Commission-hungry exchange offices line western Egnatia.
For local happenings and other info, visit the frequently updated www.enjoythessaloniki.com website, run by local enthusiasts.
Tourism Office The tourism office on Plateia Aristotelous can assist with hotel bookings, local information, and arranging tours and excursions beyond Thessaloniki.