22 beautiful churches you need to see in Europe in your lifetime

The INSIDER Summary:

• European countries are known for having beautiful historic churches. 
• The Milan Cathedral in Italy has a beautiful marble facade, and it took over six centuries to complete.
• The Rijeka Islamic Center in Croatia is a uniquely designed mosque that incorporates both modern and traditional elements.

If you're looking into taking a vacation with equal parts history and beautiful architecture, chances are European countries are at the top of your list. 

European countries are popular vacation destinations for many reasons, and beautiful historic architecture is just one of them. Visiting a place of worship, whether it be Westminster Abbey in London, England, or the Mosque-Cathedral of Córdoba in Córdoba, Spain, is a great way to learn the history and culture of the local area. 

Keep reading for 22 of the most beautiful churches in Europe that you need to visit in your lifetime. 

Sagrada Familia, Barcelona, Spain

When you think of historic European churches, the Sagrada Familia in Barcelona is probably not the first image that pops into your head.

There's nothing quite like Antoni Gaudí's style of architecture, and this Roman Catholic church is the ultimate example of that.

While Gaudí began working on the church in 1886, it remains unfinished to this day. Only 70% of the church is completed, and it is estimated to be finished in 2026. However, the Sagrada Familia is still breathtakingly beautiful, from the unique spires on the outside to the intricate stained glass on the inside. 

St. Basil's Cathedral, Moscow, Russia

St. Basil's Cathedral was completed back in 1560 after being commissioned by Ivan the Terrible, although its beautiful design and unique architecture are still in great condition.

Located in the Red Square in Moscow, the church is now a museum. It only holds one service per year, on the Day of Intercession in October. 

Mont Saint-Michel Abbey, Mont Saint-Michel, France

The abbey of Mont Saint-Michel looms over the small surrounding village on an isolated island off the coast of France's Normandy region.

The history of the church dates all the way back to the year 709, when Aubert, Bishop of Avranches, built a small church on the site.

By the 12th century, a large abbey and monastery had been constructed on the site. Today, visitors can visit the isolated town and hike to the top of the island for incredible views and breathtaking architecture.