Well, I experienced everything you will rarely (if at all) experience in a Shia "mosque", including:
- Beautiful smell of 3Oud and misk (many Shia mosques, especially in Iran smell like their unwashed feet, also they have no 3Ourd and 3attar culture, mostly rose water only which is too strong and annoying after a while).
- Straight rows (no huge gaps as it is common with Shias, so common that I think even Khomeini complained about it). Shia jama'ah prayers just look hideous, huge gaps.
- Beautiful and correct recitation of the Qur'an, something that is rare in Shia circles, especially for the turban-wearers, and no, it has nothing to do with being Arab or non-Arab as most Sunnis in the world (over 80%) are non-Arabs yet masters of Tajwid and Qira'ah.
- They call praying to Allah in congregation a bid'ah (a proven Sunnah even according to Zaydi text:
https://shiascans.com/2017/05/26/aqahl-al-bayt-and-tarawih-prayer-in-zaydi-shiism/ ) yet are themselves indulged in hineous innovations such as reciting supplications where the 12 Imams are invoked, in their "mosques" and in CONGREGATION and during Ramadan (yet Tarawih is 'bid'ah'!) whilst juggling masahif/copies of the Qur'an on their heads:
https://shiascans.com/2017/06/11/even-in-ramadan-shias-wail-and-invoke-imams/ alhamdulillah, no such things in actual mosques, only pure Sunnah and worship of Allah.
In simple words: It is THE month of worshipping Allah only, no Abu Bakr, no 'Omar and no 'Ali is invoked nor are entire days reserved for wailing (the Shia even wail in Ramadan for 'Ali's martyrdom having distorted yet another month and turned away the worshippers from the remembrance of the Creator to the remembrance of the creation), absolutely beautiful or in 'Ali's words:
حَدَّثَنِي مُحَمَّدُ بْنُ الْحَارِثِ الْخَرَّازُ ، قَالَ : ثنا سِنَانُ بْنُ حَاتِمٍ ، قثنا جَعْفَرُ بْنُ سُلَيْمَانَ ، قثنا حُبَابٌ الْقُطَعِيُّ ، عَنْ أَبِي إِسْحَاقَ الْهَمْدَانِيِّ ، قَالَ : خَرَجَ عَلِيُّ بْنُ أَبِي طَالِبٍ عَلَيْهِ السَّلامُ فِي أَوَّلِ لَيْلَةٍ مِنْ شَهْرِ رَمَضَانَ وَالْقَنَادِيلُ تُزْهِرُ ، وَكِتَابُ اللَّهِ يُتْلَى فِي الْمَسَاجِدِ ، فَقَالَ : نَوَّرَ اللَّهُ لَكَ يَا عُمَرُ ابْنَ الْخَطَّابِ فِي قَبْرِكَ ، كَمَا نَوَّرْتَ مَسَاجِدَ اللَّهِ بِالْقُرْآنِ
Muhammad ibn Al-Harith Al-Kharraz told me: Sinan bin Hatim told us: Ja’far ibn Sulayman told us: Hubab Al-Quta’i told us: from Abu Ishaq Al-Hamadani, he said: ”Ali ibn Abi Talib went out on the first night of Ramadan while lanterns were glowing and God’s Book was recited in the mosques (during Tarawih). ‘Ali then supplicated: “May Allah fill your grave with light, O ‘Omar bin Al-Khattab as you’ve lit God’s houses with the Qur’an.” [Fada’il-Ramadan li Ibn Abi Al-Dunya]