The proof is in the name — this charming hostel in the coastal city of Porto is all about fermented grapes. If you're a port wine drinker, welcome to the motherland! The city is filled with port tasting houses, but since the Wine Hostel's daily happy hour is so good, you might never want to leave. Clad in floor-to-ceiling wine decor, the hostel offers a surplus of port varieties to try (for cheap).