Major mosques enforce dress requirements that catch unprepared tourists off-guard daily. Blue Mosque, Süleymaniye, New Mosque, and Rüstem Pasha all require long pants for men, plus long sleeves and head covering for women—no exceptions, regardless of temperature. Guards turn away visitors who don't comply.

Free plastic coverings available at entrances look ridiculous in photos and feel uncomfortable in 35°C heat. Instead, pack lightweight essentials: women should carry a cotton scarf and cardigan, men need long pants even during summer. Quick-dry travel pants and a pashmina solve the problem elegantly while keeping you cool.

Prayer times temporarily close mosques to tourists—30 minutes before each of five daily prayers, then 45 minutes during the service itself. Check official prayer timetables or expect potential waits, especially during crowded summer months when timing becomes crucial.

Additional etiquette: remove shoes before entering prayer areas, keep voices low during visits, avoid photographing worshippers, and step aside respectfully if prayer begins. Women should avoid visiting during Friday noon prayers when mosques fill with local congregations. These aren't tourist attractions—they're living places of worship where respect opens doors to extraordinary spiritual experiences.