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.

Chillida-Leku is an open-air museum near the city of Hernani, about an hour and a half from Bilbao, dedicated to the Basque sculptor Eduardo Chillida. Around 40 of his monumental steel and granite works are dotted through meadows and woodland, with smaller pieces displayed inside the restored 16th-century Zabalaga farmhouse. The grounds are peaceful and easy to wander, and there’s also an organic café and shop on site.

This is the most popular tourist attraction in Sofia. The beautiful orthodox cathedral was built in 1912 and took 30 years to complete. The cathedral was created in honour of the Russians soldiers that died in the Russo-Turkish war and holds up to 10,000 people.

Built upon the remains of a mosque, this church is dedicated to the city's patron saints, whose martyrdom coincides with the traditional date of the city's reconquest, believed to have occurred on July 17, 1243. The structure is a single-nave Gothic temple, featuring side chapels between buttresses that date back to the 14th and 15th centuries. The presbytery and the side doorway, known as the Anunciación, are designed in Renaissance style. Alongside the nave, the Baroque Communion Chapel can be found. The main facade is adorned with a grand doorway, also in Baroque style, which was crafted by Antonio Villanueva and Cristóbal Sánchez. Particular attention should be given to the Gothic-style bell tower, which is remarkably slender and likely completed in the mid-15th century. The tower features gargoyle-shaped drains in its corners and sculptures of mythical beasts. Additionally, the clock, commissioned by the town council in 1439, is of historical interest.