Subways in Barcelona, Vienna, Budapest?

Question

Are are the subways or metro trains in Barcelona, Vienna, and Budapest compare to the metro in Paris.

Answer 1

They're not quite as clean or as extensive, but they're cheaper and absolutely get you from point A to point B. I used buses a lot in Budapest to fill in the gaps that the subway didn't cover, and in Vienna I didn't really find them necessary, as sites were close together. The subway is useful in Barcelona, but the first time I was there I wanted to walk everywhere, because it's so beautiful.

Answer 2

The metro in Paris is almost totally underground. The subways in Barcelona, Vienna, and Budapest are mixtures of underground, ground, above-ground trafic systems. The definition U-bahn or U-train as often used does not mean "U"nderground as in London but "U"nabhängig, which means independable of other traffic.