The first reliable report of the mineral springs came in 1568 from the Worms doctor Tabernaemontanus, who also made the place known in his 1581 work Neuw Wasserschatz (New Water Resources).

Although Langenschwalbach was utterly destroyed in the Thirty Years' War, it was quickly rebuilt, and the healing water trade began to blossom.

In a wood near Bad Schwalbach in late 1800 or early 1801, Katharina Pfeifer is said to have borne the outlaw Schinderhannes (Johannes Bückler) a child.

[3] The municipal election held on 26 March 2006 yielded the following results: The Kurbahn, which operates on the rails of the former Moortransportbahn in the spa park, provides special access to the town’s and health resort’s history.

Also worth seeing are the seven fountains and many temples, among them the Elisabethentempel, which was endowed by Elisabeth of Austria-Hungary (Sissi) while she was staying at the spa in Langenschwalbach.

North of the town is found Alexander’s Rest – so called even in German – a sheltered bench which also serves as a memorial to a British spa visitor who was killed at this spot in a bicycle accident in August 1896 (he is buried at the local cemetery).

Bad Schwalbach also lies on the Aartalbahn, but there has been no regular passenger service since 1986, only seasonal railway-museum tours by the Nassauische Touristikbahn.