Near the Stock Palace and the Douro River is another UNESCO World Heritage site that is well worth visit while in Porto, the Monument Church of St Francis, or Igreja Monumento de São Francisco. This church built around the 14th century has one of Europe's most sumptuous and extravagant interiors. Here, all that glitter is, in fact, gold! Its interior is covered in gilded woodwork, and rumour has it that it was used around 400 to 600 kg of gold to decorate it. Hence why the St Francis Church is also known as "The Golden Church". Another highlight of this church is its impressive Tree of Jesse, a wooden sculpture carved by Filipe da Silva and António Gomes in 1718 depicting the ancestors of Jesus Christ, shown in a branching tree — considered to be one of the best in the world of its kind. Under the church, you will find the catacombs, where the Franciscan monks along with the members of Porto's noble families are buried.

Marché Central is an animated indoor market dating back to the early 20th century, and it's a must-visit spot in Casablanca. Even if you're not in the market for its extensive selection of fresh fruit, vegetables and seafood, the experience alone is rewarding. Stroll through the bustling aisles and consider stopping for a casual meal at one of the no-frills food stalls that offer a taste of local flavours.

The Hassan II Mosque commands a dramatic presence on a promontory overlooking the Atlantic Ocean. Its vast prayer hall and 210-metre minaret make it one of Casablanca’s most recognisable sights. Join a guided tour to see the detailed woodwork, marble floors, and the small glass section set over the water, and take your time walking the esplanade outside for long views along the coast.