The Sultan Ahmet Mosque also known as the Blue Mosque in Istanbul, Turkey.

The mosque was built by Sultan Ahmet during the years 1610-1616. It was designed by the architect Sedefkar Mehmed Aga in the style of Islamic Architecture. The construction system used for the structure of the mosque is bearing masonry.

"The cube is topped by an ascending system of domes and semi-domes, culminating in the central dome, which is 33 meters in diameter and 43 meters high at its central point. The overall effect is one of perfect visual harmony, leading the eye up to the peak of the dome.The Sultan Ahmet Mosque is the only mosque in Turkey that has six minarets.

At its lower levels the interior of the mosque is lined with more than 20,000 handmade ceramic tiles, made at Iznik. Its upper levels are painted. More than 200 stained glass windows with intricate designs admit natural light, today assisted by chandeliers. On the chandeliers, ostrich eggs are found that were meant to avoid cobwebs inside the mosque by repelling spiders. The decorations include verses from the Qur'an, many of them made by Seyyid Kasim Gubari, regarded as the greatest calligrapher of his time. The floors are covered with carpets, which are donated by faithful people and are regularly replaced as they become worn out.
The most important element in the interior of the mosque is the mihrab, which is made of finely carved and sculptured marble, the adjacent walls sheathed in ceramic tiles."

*Quotated text from http://en.wikipedia.org/wiki/Sultan_Ahmet_Mosque