The Rotunda dedicated to St. John the Baptist is Xewkija's distinctive landmark and parish church. Tourists and visitors flock year round to visit the church and its attractions. Its elegant dome, 75 metres high, with a 28-metre diameter, and a circumference of 85 metres, is the third largest unsupported dome in the World. The interior is richly decorated with fine sculptures and modern paintings. The floor is in polished Carrara marble and the main altar is also carved in precious marble. The church was built in replacement of an older church, parts of which were faithfully reconstructed using the original stones and can be viewed at the rear of the Rotunda. The church was built from Maltese stone by local masons and craftsmen and completed in 1971.