What's in a Prague street name

U koupadel was built in 1935.

‘Koupadla’ are ‘baths’, as in the outdoor ones you would go to swim in, rather than the indoor ones that you want to lie in for hours on end after having a bit of a day of it at work (I’m in that place today). See also: ‘koupaliště’.

And also see also, therefore, two days ago: https://whatsinapraguestreetname.com/2026/02/22/prague-4-day-317-u-lazni/.