When it comes to historical buildings, we usually imagine castles, towers, bricks, and mortar. Rarely do we think about the colors it might have. Here's an exception. The Nasir Al-Molk Mosque was built in 1876 in Shiraz, Iran. The specialized stained glass windows were built to capture the morning light and create a glorious and colorful display of light on the building's floor, earning it the name "Pink Mosque".