The Church of Santa Juliana is a historic Romanesque church located in Santillana del Mar, Spain. It was built in the 12th century and is known for its beautiful architecture, including intricate stone carvings and a stunning apse. The church is dedicated to Saint Juliana, a Christian martyr, and serves as a significant example of medieval religious architecture in the region. Inside, the church features a simple yet elegant interior, with a wooden ceiling and several altars. The Church of Santa Juliana is part of the Monastery of Santa Juliana, which played an important role in the area's religious history. Today, it attracts visitors interested in art, history, and architecture.