Palazzo San Felice in Naples is a cool Rococo-style palace known for its fancy staircase. Built in the early 18th century by architect Ferdinando Sanfelice, it's got a grand entrance with stucco sirens and an octagonal courtyard leading to a double ramp stairwell. The interior used to be decked out with frescoes by Francesco Solimena, but they're sadly gone now. Despite its current rundown state, the palace still exudes a vibe of intricate design and historical charm.