You'll find one of the city's best-kept secrets hidden inside what looks like a standard public library. Head up to the fourth floor to discover the original Wenckheim Palace, a series of stunningly ornate rooms that now serve as reading halls. It's a working library, so you'll be sharing the space with students, but for a small tourist fee of 2000 HUF, you can wander through these grand halls that feel like stepping back in time. The contrast between the quiet, studious atmosphere and the lavish, historic setting is truly something special.