The Roman Catholic Basilica of Our Lady is a Romanesque basilica in Maastricht, dedicated to Our Lady of the Assumption. The church is often referred to as the Star of the Sea, after the church's main devotion, Our Lady, Star of the Sea.  The present church is largely Romanesque. Blocks of stone from the ancient Roman walls were re-used for the westwork which dates from shortly after 1000 AD. Most of the church was built in the course of the 12th century, including the late 12th century East choir with its two- storey ambulatory with richly decorated capitals. The architectural sculpture in the interior of the Basilica of Our Lady belongs to the highlights of Mosan art. The 20 highly symbolic capitals in the choir ambulatory depict various kinds of animals, monsters, birds, naked or scarcely-dressed humans entangled in foliage, and humans fighting with animals. Near the center of the ambulatory there are a number of biblical scenes. One capital in particular is famous as it was signed Heimo, probably by its maker, who may also be represented on it, handing over a capital to the virgin Mary. The carved capitals and corbels of the choir gallery, as well as the capitals in the nave, depict mainly foliage and some human and animal figures. Most of the capitals, as well as some important reliefs elsewhere in the church, date from the second half of the 12th century.

 http://en.wikipedia.org/wiki/Basilica_of_Our_Lady_(Maastricht)