An indoor pool in Italy is giving new meaning to the deep end and it's slightly terrifying.
The pool was designed by architect Emanuele Boaretto and is housed on the grounds of Hotel Terme Millepini near Padua, Italy. According to the project's website, Boaretto's goal was "to build the best swimming pool in the world." While that measurement is a bit subjective, the pool is Guinness World Records-certified as the world's deepest swimming pool for diving.
According to Guinness, the pool holds 1,135,939 gallons of thermal water and is currently "used for dive training, leisure diving and scientific research." It's easy to visit the hotel and explore the adjoining Y-40 pool, as you can just sign up to book a hotel room and a dive at the same time.