The Conservatory and Botanical Garden is a peaceful spot just outside the city centre, home to over 16,000 plant species from around the world. It also holds the world’s largest herbarium, with more than six million preserved specimens — though that part isn’t open to the public.

The White Tower is the most iconic symbol of the city. The tower was constructed by the Ottomans sometime in the early 15th century and once guarded the eastern end of the city's sea walls. In the 19th century, this tower was used as a notorious prison. Nowadays, it is a welcoming museum of art and local history. The museum offers a rapid lesson in the history of the city. Ideally, you'll take in this well-dosed overview before continuing to the more specialised museums and archaeological sites. For best results, grab the free audio guide at the entrance. The last floor of the tower gives you a wonderful view of the city.

Penang’s famous butterfly farm at Entopia Natureland is the world’s largest. With garden pavilions and breeding areas for more than 50 species of spectacularly colourful butterflies and insects, which all the same share this ecological space with a variety of other animal species such as invertebrates and small reptiles, up to 4,000 gorgeous living specimens can be seen at any time.

Tourbet el Bey stands as the most significant royal mausoleum in Tunisia. The monument serves as the final resting place for the Husainid dynasty rulers who governed from 1705 to 1957. Its distinctive green fish-scale domes crown an imposing quadrangular structure, blending Ottoman grandeur with Italianate stucco work and Andalusian tile motifs. Built during Ali Pasha II’s reign (1758–82), the interior reveals a spatial homage to Istanbul’s Hagia Sophia, where vaulted ceilings display intricate polychrome stucco arabesques. The tombs tell silent stories: male rulers are marked by marble carvings of their headgear (turbans or chechia caps), with tassel counts denoting rank, while women’s graves bear simple plaques. A courtyard paved with memorial slabs connects the chambers, their walls shimmering with historic ceramic tiles.