The Old Wastewater Treatment Plant, operational from 1906 to 1967, now showcases the evolution of architecture, technology and water management. It was a key part of Prague's modern sewer system, designed to collect and treat wastewater before discharging it into the Vltava river, significantly improving public health and aiding the city's development. Today, the site, managed by Tovarna z.ú., hosts exhibitions, concerts and themed events, featuring operational steam engines and showcasing the original machinery and craftsmanship. The plant is a National Cultural Monument of the Czech Republic, an anchor point of the European Route of Industrial Heritage, and a UNESCO candidate.

The compact yet informative archaeological museum of Astypalaia provides visitors with a brief runthrough the rare finds which have been made on the island. Exhibits include jewellery, tools, ceramics, and other items dating from between the prehistoric period and Medieval times.

Located near Sharm’s Old Market, Al Mustafa Mosque is one of Sharm’s most iconic sights. Built in 2008, it’s hard to miss with its two 72-metre minarets and carved stone dome that’s especially striking when it’s lit up at night. It’s an active mosque, so it's best to avoid during prayer times. Around it, you’ll find a more local side of Sharm, with small shops, cafés, and everyday street life.