The Carlsbad Hotel opened in 1887, built to capitalize on the mineral spring and the railroad connection that brought visitors down from Los Angeles and up from San Diego. The theory was that health tourism — the same impulse that filled Karlsbad with European visitors seeking cures — could work on the California coast. The hotel offered access to the mineral waters, the ocean air, and a setting that made the therapeutic framing plausible. Greta Garbo stayed there. John Wayne stayed there. Bing Crosby stayed there. The guest list accumulated the kind of celebrity endorsement that mid-century California resorts required. Then, in 1896, the hotel burned. Fire was the standard terminus for wooden resort hotels of the era, and Carlsbad's flagship was not an exception.

The Carlsbad Hotel was rebuilt after the fire, though the reconstruction shifted the property's character over subsequent decades. The building changed hands multiple times and served various purposes before a Lutheran organization acquired it in 1957 and converted it into a retirement community. The theological impulse was different from the health-tourism impulse that had founded the hotel, but the underlying logic — a pleasant coastal California setting offering care and community — translated across the change in mission. The facility eventually became part of Front Porch Communities, a nonprofit senior living organization, and continues to operate as a retirement community in the present day. The guests who walk the grounds now are not celebrities seeking cures but residents seeking stability, in a building whose history includes both.

Karlsbad, the Bohemian original, is now Karlovy Vary in the Czech Republic — its German name replaced after World War II, the spa culture still operating but the European aristocracy that once filled its colonnades long gone. Carlsbad, the California copy, became an incorporated city of more than 110,000 people, known in the late twentieth century for tourism, manufacturing, and the flower fields north of the village. The mineral spring that started the comparison has receded into history; the property where it was discovered has been built over many times. The name persists across all of it, a phonetic inheritance from a Bohemian spa town that most of Carlsbad's residents have never visited and the city's founders encountered only by reputation, translated through the taste of water from a coastal California well.