This 4km-long promenade is composed of a series of three thoroughfares used by the monarchy (hence its name). It links the Old Town to the Lazienski Park and, further south, to the Wilanow Palace. Lined by commemorative monuments, historical buildings, impressive town houses, palaces and churches, in the Baroque, neo-Renaissance or neo-Classical style, it merits discovery on foot or in a horse-drawn carriage.