The Cathedral of Santa Eulalia, also known as Barcelona Cathedral, is a stunning example of Gothic architecture located in the heart of Barcelona, Spain. It was built between the 13th and 15th centuries and is dedicated to Saint Eulalia, the city's co-patron saint. The cathedral features intricate facades, beautiful stained glass windows, and a serene cloister. Visitors can explore the cathedral's impressive interior, which includes a grand altar and numerous chapels. The rooftop offers panoramic views of the city, making it a popular spot for tourists. The cathedral is not only a place of worship but also a significant historical landmark in Catalonia.