1. St. Peter’s Basilica, Vatican City

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15160 square meters and maximum capacity of 60 thousand

2. Basilica of the National Shrine of Our Lady of Aparecida

basilica-of-our-lady-of-aparecida
12000 square meters and 45-70 thousand, 1946-1980, receives up to 10 million visits per year.

3. Cathedral of Seville, Spain

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11520 square meters and 42 meters in height , 45 wooden carved scenes from the life of Jesus Christ.

4. Cathedral of St. John the Divine, United States

cathedral-of-st-john-the-divine-united-states
11200 square meters and length of 183.2 meters, window made of 10000 pieces of colored stained glass.

5. Cathedral of Milan, Italy

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10186 square meters

6. Cathedral of Liverpool, UK

cathedral-of-liverpool-uk
9,687 square meters, has a maximum capacity of up to 5,800 people.

7. Basilica Of Our Lady Of Lichen, Poland

basilica-of-our-lady-of-lichen
10090 square meters and height of 141.2 meters.

8. Basilica of the Sacred Heart, Belgium

basilica-of-the-sacred-heart-belgium
8,000 square meters

9. Basilica of the Holy Trinity, Portugal

basilica-of-the-holy-trinity-portugal
8,700 square meters and capacity of up to 9000 people

10. Ulm Minster, Ulm, Germany

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8260 square meters

All Image taken – wikipedia.org