The castle situated above the river Teplá was built around the end of the 13th century. The greatest development of
Bečov occurred in the period between 1495 - 1557, when the castle belonged to the noble family of Pluhas of Rabštejn.
The settlement in front of the castle obtained its present appearance in the year 1752, when the mighty protective tower was replaced by the baroque manor;
the surroundings also experienced substantial changes.
The therapeutic effect of the Karlovy Vary springs has been utilized ever since the Middle Ages.
The spa became a tryst of aristocracy in the 17th and 18th centuries.
The town's most valuable architecture has its origin in this period as well, the baroque Church of St. Mary Magdalen, built by
K. I. Dientzenhofer in 1727 - 1736. However, the spa's greatest upsurge occurred as late as in the 19th century, when Karlovy Vary became world famous.
The spa buildings, colonnades and pavilions were constructed in the mood of a severe Imperial and, later on, Art Nouveau style.
The centre of the present spa bustle in Karlovy Vary is a modern pavilion with the main Karlovy Vary spring, Vřídlo,
and the Mlýnská Colonnade.