Blue Mosque, Istanbul (must see)

If there's one “celebrity monument” with its own fan club in Istanbul, it is undoubtedly the Sultan Ahmed Mosque — better known as the “Blue Mosque.” Why this nickname? Step inside and you’ll see for yourself —thousands of shimmering blue tiles that turn the whole interior into a calming ocean of color. Built between 1609 and 1616 under Sultan Ahmed I, this place isn’t just a pretty façade but is also home to the Sultan’s tomb. Formerly a religious school (or madrassah), it also housed, once, what used to be a hospice. And despite welcoming tourists from sunrise to sunset, it still functions as a real mosque. That means the call to prayer — five times a day — pauses sightseeing (for approximately half an hour) and reminds everyone that this is primarily a place of worship rather than a photo backdrop...

The Blue Mosque stands right across from Hagia Sophia, making Sultanahmet Square the heavyweight championship ring of world architecture. Surrounded by museums, cafés, parks, and postcard-perfect views in every direction, it’s basically the center of Istanbul’s charm offensive. Curious fact: the mosque was built on top of the old Byzantine Imperial Palace grounds and parts of the Hippodrome. Inside, the walls are covered with breathtaking Islamic art and masterful calligraphy that feels like history’s own handwriting.

The fact that it’s free, world-famous, and (unlike many other similar attractions) is incredibly easy to reach, makes this mosque a definite must-visit. Yes, there are dress codes, security checks, and lines that might make you consider new career paths while waiting… but once inside that peaceful, domed interior — despite all the crowds — you will gladly realize it's been worth it.

Pro tip: Arrive early to avoid queues — your future self will thank you. While waiting, instead of counting heads in line, admire the details around you; Islamic design rewards those who actually look up. And when hunger strikes, don’t worry — great food and drinks are just steps away. Even from the outside, the mosque is a dream for photographers… So, go ahead, circle it like a curious cat and capture every angle.