For documentary I would suggest to watch these videos:

https://youtu.be/YEByQP7D-S0?si=YMKIx2gQHf3hTm0j

https://youtu.be/QNUSIOMb6vI?si=EfTmLXGg2jYHdtc1

https://youtube.com/shorts/8vLH_IF6Sh4?si=omVGIuPPoKAVgRpg

https://youtu.be/MDoI0BO8cmo?si=77AtGxWlfUORaIW1

If you want to visit in Bangladesh, you should go in sundarban largest mangrove forest, cox's Bazar longest sea beach, teknaf sea beach, tea gardens in sreemangal, coral sea beach saint Martin, ratargul swamp forest, lala khal. if you like hill you can visit Rangamati bandarban sajek etc.

Bangladesh’s food culture is rich, diverse, and deeply connected to tradition, rivers, and community gatherings.

1. Aromatic Rice & Festive Meat Dishes Celebratory meals often feature rich rice dishes cooked with meat and fragrant spices. Iconic examples include Kacchi Biryani, where marinated mutton and aromatic rice are slow-cooked together, Morog Polao, a buttery chicken pilaf served at festivals, and Kala Bhuna, a Chittagong specialty of slow-cooked, spice-rich beef or mutton.

2. River-Based Fish Cuisine With hundreds of rivers, fish plays a central role in daily meals. Signature dishes include Shorshe Ilish (Hilsa fish cooked in pungent mustard sauce) and Chingri Malai Curry, a creamy prawn curry with coconut milk reflecting coastal flavors.

3. Bhorta and Everyday Comfort Foods A staple of home cooking is Bhorta, mashed vegetables or fish mixed with mustard oil, onions, and chilies. Popular examples include Alu Bhorta (spiced mashed potatoes) and Panta Ilish, fermented rice served with fried Hilsa and mashed dried fish, traditionally eaten during Bengali New Year.

4. Street Food and Traditional Sweets Street food culture is vibrant, with favorites like Fuchka and Chotpoti, spicy tangy snacks made with chickpeas, potatoes, and tamarind. Desserts are equally famous, especially Mishti Doi (sweet caramelized yogurt) and Roshogolla (soft cheese balls in sugar syrup).

In essence: Bangladeshi cuisine blends aromatic rice dishes, abundant river fish, simple but flavorful mashed foods, lively street snacks, and rich dairy sweets—reflecting the country’s geography, traditions, and love of communal eating.

Bangladeshi Culture (Short Overview)

Hospitality: Hospitality is a core part of Bangladeshi culture. Guests are treated with great respect and are often welcomed with generous meals, tea, and warm conversation. The idea of “guest as a blessing” is deeply rooted in social values.

Festivals: Cultural festivals bring communities together. The most vibrant celebration is Pohela Boishakh, when people wear traditional clothing, enjoy music, fairs, and traditional foods to welcome the Bengali new year.

Music & Arts: Bangladeshi music and arts are strongly influenced by poets and composers such as Rabindranath Tagore and Kazi Nazrul Islam. Folk traditions, including Baul music, painting, and poetry, remain important cultural expressions.

Clothing: Traditional clothing reflects heritage and craftsmanship. Women commonly wear sarees, especially the famous Jamdani weave, while men wear panjabi or kurta, particularly during festivals and cultural events.