A cup designed for a walking cure

Karlovy Vary’s drinking ritual turns the town’s springs into part of a promenade. Visitors fill small porcelain spa cups and sip through a narrow built-in spout as they move among the colonnades. The shape makes the cup easy to carry and encourages small sips rather than treating the spring water like an ordinary drink. Its ornate appearance belongs to the ceremony; the practical design keeps the water close at hand.

Why the water smells—and why people drink it

The springs are groundwater heated underground and enriched with dissolved minerals as it moves through rock. Some of those compounds can give the water its sulfurous, egg-like smell. Different springs emerge at different temperatures, so the experience can vary from one source to another.

The practice is part of a long European spa tradition in which visitors drank mineral water as well as bathing in it. In Karlovy Vary, founded in the 14th century, the springs became the organizing feature of a town built for spa-going: visitors could collect water, walk beneath sheltering colonnades, and repeat the routine. The taste is not the point so much as the regimen and setting. A few careful sips turn an unusual geothermal resource into a distinctly social ritual.