Three days gives Jeddah a solid introduction, balancing the historic old town with the city's Red Sea coastline and, for certified divers, the reef beyond it. Day 1 belongs to Al-Balad, the UNESCO-listed historic district. The coral-stone merchant houses here, with their elaborately carved wooden balconies known as rawasheen, exist in a form found almost nowhere else in this concentration. Daytime heat and limited shade make the old town considerably more comfortable in the evening, so plan a return visit after dark when the historic buildings are lit and the narrow lanes come alive with locals and visitors alike. Day 2 moves to the Corniche, Jeddah's long Red Sea waterfront. Public art installations dot the promenade, and the King Fahd Fountain — the tallest fountain in the world — is best seen illuminated after sunset. Beaches along the Corniche offer an easy, relaxed contrast to the historic district's density. Day 3, for those with diving certification, is best spent on a Red Sea diving or snorkelling trip. Jeddah serves as a genuine gateway to Red Sea reef diving, with sites considerably less crowded than Egypt's more famous dive destinations along the same sea. Operators run day trips to coral reefs just offshore, suitable for both certified divers and snorkellers. A few practical notes: visit Al-Balad in the evening rather than the heat of the day for both comfort and atmosphere. Dress modestly throughout the city, with loose, comfortable clothing both expected and genuinely practical given the climate. And remember that Saudi Arabia remains dry nationwide — no alcohol is sold or served anywhere, including hotels, so plan your evening activities around dining and culture rather than nightlife in the conventional sense.