The Kasbah is the part of Marrakech that most visitors walk past without quite realising what it is. Pressed against the southern wall of the Medina, it was historically the city's fortified core — home to the sultan's palace, the royal mosque and the tombs of the Saadian dynasty. Today the royal grounds are still closed to the public, but the neighbourhood around them has become one of the most pleasant corners of the old city: quieter than the areas around Djemaa el-Fna, genuinely local in character and dotted with some of the best-value riads in the Medina.
The Saadian Tombs alone justify the walk south — the sixteenth-century mausoleum is one of Morocco's finest pieces of decorative architecture, all carved stucco and Italian marble columns, and it was hidden behind a sealed wall for nearly three centuries until French archaeologists discovered it in 1917. The adjacent Kasbah Mosque, built by the Almohad sultan Yacoub el-Mansour, has one of the most distinctive minarets in the city. And from Bab Agnaou — the ornate stone gate that marks the Kasbah entrance — it is a short walk east to El Badi Palace and Bahia Palace, giving you three of Marrakech's most substantial historic sites within a tight radius.
For first-time visitors, the Kasbah is worth an afternoon at minimum. For anyone staying more than three nights, it is worth considering as a base — particularly if you value sleep over being two minutes from the main square's restaurants.