You can’t visit Istanbul without taking in a mosque, the house of worship for followers of Islam. These grand structures are not only architectural marvels, but also feature stunning examples of Islamic artwork. Fortunately, there are many to choose from, with over 3,000 in Istanbul alone. If there is a long line outside one mosque, walk just a couple of blocks and you will easily find another one to enter. Here are three good ones to check out.

1. The Blue Mosque (Sultanahmet Camii)

The call to prayer, a soaring, hypnotic chant, spills out onto the ancient streets of Istanbul’s Sultanahmet neighborhood five times a day from this mosque’s minarets. Built in the 17^th century during the reign of Ahmed I, this popular and important mosque gets it’s nickname from the beautiful blue tile work ornamenting it’s interior. It functions as a working house of worship, despite the ever-present stream of tourists that fill it’s walls with camera flashes and hushed voices. Men pray in the main hall, while women pray in the back, in screened areas. It is considered to be the last great mosque from the Ottoman classical period of architecture. One can certainly see why.

Interior of the mosque ft. much editing

Expect to wait in line to enter the Blue Mosque. It is free, but closes after 7pm to tourists and during pray five times a day.

2. Ortakoy Mosque

This enchanting mosque is situated in a picturesque location, overlooking the Bosphorus Strait. Constructed in 1853, it has seen hard times. (Think fires and earthquakes). Hence, the mosque has been reconstructed and renovated multiple times over the years. Now, glittering chandeliers and high windows make for a breathtaking interior. It is small inside, with really just a strip of carpet available for visitors to stand on. It is quieter than the Blue Mosque, with fewer tourists crowding it’s insides.

3. Nuruosmaniye Mosque

I stumbled upon this peaceful mosque on a sunny day by mere chance. Located near the entrance of the Grand Bazaar, it dates back to 1755 and was built by architects Mustafa Aga and Simeon Kalfa. It’s a nice and quiet respite from the bustling streets outside. I sat on the soft carpets for a long stretch of time, letting my thoughts float up, towards the high ceilings.

Ahhh so pretty

When visiting a mosque, dress code is of the utmost importance. Women must have their knees covered (wear jeans not leggings), as well as hair. Most mosques, such as this one, will supply you with free headscarves to enter, but there are also always people pushing you to buy scarves outside. Men must have their knees covered as well. Also, remember to remove your shoes (no matter how stinky your feet may be) before entering all mosques. This is mainly to keep the carpets clean and free of outside impurities.

Me + Headscarf

So, whilst you are in Istanbul, pay a visit to one or more of it’s 3,000+ mosques. It is an experience rich with historical and spiritual value, as well as evidence that humans are capable of crafting architectural gems.