Matthias Church, also known as the Church of Our Lady, is a historic Roman Catholic church located in the Castle District of Budapest, Hungary. It was originally built in the 13th century as a Romanesque-style church and was later reconstructed in the Gothic style in the 14th century. It underwent several renovations and expansions over the centuries, with the most significant being in the late 19th century when it was transformed into the magnificent Neo-Gothic structure that stands today.

The church has played an important role in Hungarian history and culture, serving as the coronation church of several Hungarian kings and queens over the centuries. It is named after King Matthias, who ordered its reconstruction in the 15th century.

The interior of the church is richly decorated with ornate frescoes, stained-glass windows, and intricate carvings. The central nave features a magnificent high altar, while the side chapels contain numerous statues and art pieces. The church's most distinctive feature is its ornate, multi-colored tiled roof, which was restored in the early 20th century.

Matthias Church is open to visitors and also hosts regular masses, concerts, and other cultural events. Its stunning architecture and rich history make it a must-visit attraction for tourists in Budapest.