Queen Mary's Bath House in Edinburgh, Scotland is a quirky little building that supposedly dates back to the time of Mary, Queen of Scots. Legend has it that she bathed in white wine here, but the truth is a bit murky. The two-story structure, built in the late 16th century, may have been a summer house, tennis pavilion, or even a dovecot. While you can't go inside, you can still check it out from the outside near Holyrood Palace. It's a cool spot with a lot of history and mystery surrounding it.