Boyana Church is the oldest Orthodox church in Sofia. This medieval construction, set in a green area at the foot of the mountains, was added to the list of UNESCO World Heritage sites due to its renaissance-style frescoes. In the church you can see 89 scenes with 240 human images.

Kasbah Square, a monumental plaza at the entrance to Medina, holds deep significance in Tunisia’s history. Once the site of a fortified citadel (demolished post-independence), it now anchors administrative buildings like Tunis City Hall and the National Monument — a memorial to pivotal national events. Facing the iconic Kasbah Mosque, the square blends tradition and modernity with its red Tunisian flags and iconic black lanterns. Since 2011, it has also become a gathering place for political demonstrations, including historic sit-ins demanding government reform.

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.

This gorgeous Russian Orthodox church is located in central Sofia. It was built by Russia after the liberation of Bulgaria. The grave of Saint Archbishop Seraphim is located under the main floor - believers still visit for pilgrimages, leaving notes with wishes and prayers.