Built in the 17th century, Sidi Youssef Dey Mosque was the first Ottoman-style mosque in Tunis, designed by Andalusian architect Ibn Ghalib. Its eclectic mix of influences reflects the era’s cultural exchanges. Flanked by Turkish souqs — El Trouk (once tailors, now clothing and embroidery), El Berka (formerly a slave market, later jewellery traders), and El Bechamkia (slippers and shoes) — the mosque served the city’s Ottoman-era merchants. The minaret, topped with a distinctive green-tiled pyramidal crown, became a model for later Ottoman designs in Tunis. Its octagonal shape, novel at the time, subtly asserted Ottoman authority. Inside, the mosque houses the tombs of Youssef Dey, commander of the janissaries, and his family. Sidi Youssef remains an active mosque, so plan visits outside prayer times, when non-Muslim visitors may enter. Its striking architecture, both inside and out, anchors a neighbourhood rich with history.

The Blue Lagoon is without a doubt the most well-known geothermal spa in Iceland. The signature milky-blue water makes a stark contrast to the surrounding black lava fields and creeping grey moss. The spa is located in a lava field near Grindavík and is supplied by water used in the nearby Svartsengi geothermal power plant. The water temperature stays at 39°C year-round, snowfall or sunshine. Most visitors make the spa their first or last stop, since it's conveniently located only 15 minutes from the Keflavík International Airport (and around 30 minutes from the capital city). If you are buying a tour, it makes most sense to combine the spa visit with the Golden Circle day trip.

Église Sainte-Radegonde is a well-maintained 6th-century church with a beautiful Roman tower. Established as a mortuary chapel, it is home to the tomb of Queen Radegonde, who died in 587 AD, and was constructed in Romanesque style.

The festival is regarded as the biggest celebration of music in Iceland and boasts an unrivalled line-up of established and up-and-coming artists.