The Cathedral in Seville, Spain is the largest Gothic Cathedral in the world and the third largest Church in the world. Construction took just over 100 years starting in the 15th century (after the Reconquista) and was built on the site of a mosque that was damaged 50 years earlier in an earthquake. It was built in the shape of a cross when viewed aerially.
The detail of the church is amazing. The photo above shows the ceiling just above the alter area. The ceiling in this area is over 40 meters high (nearly 140 feet) and fully carved throughout.