Sutro Baths, San Francisco, USA
If you picture San Francisco, attractions like the Golden Gate bridge, Alcatraz or Lombard Street might spring to mind. But did you know that the city was once home to the world’s largest indoor swimming pool establishment? The impressive complex included six saltwater pools and one freshwater pool, with capacity for 10,000 people.
After struggling financially for many years, the Sutro Baths closed in 1966, and later burned down in June of that year. Now, the foundations remain as a reminder of the Victorian attraction, with the cliff-side setting making it a popular spot for walkers.