Later on, by the middle of the 17th to early 19th centuries, Maldivian coral stone mosque architecture developed and flourished. Due to the country's proximity with the Arabian peninsula, Arabian onion-dome mosque architecture soon replaced the majority of indigenous Maldivian coral stone mosques by the middle of the 19th century. Today, only six Maldivian coral stone mosques are in good condition, all of which are listed as UNESCO Tentative Sites under the nomination name of Coral Stone Mosques of Maldives.