Bring good shoes. Built on a series of hills, Lisbon can make you feel like you're always walking up one. Go for comfort over style when you pack.
Walk around the city to experience some epic street art then head underground and ride the metro to the Avenida Metro stop. Turn down Rua do Salida to a nondescript apartment building with a red frog over its doorbell. That's where you'll find the hidden Red Frog Speakeasy.