St. Martin's Island (Bengali: সেন্ট মার্টিন্স দ্বীপ) is a small island (area only 36 km2) in the northeastern part of the Bay of Bengal, about 9 km south of the tip of the Cox's Bazar-Teknaf peninsula, and forming the southernmost part of Bangladesh. There is a small adjoining island that is separated at high tide, called Chera Dwip. It is about 8 kilometres (5 miles) west of the northwest coast of Myanmar, at the mouth of the Naf River.

Millennia ago, the island used to be an extension of the Teknaf peninsula, but at a later time some portion of this peninsula got submerged and thus the southernmost part of the aforementioned peninsula became an island, and was disconnected from the Bangladesh mainland. The first settlement started 250 years ago by Arabian sailors who named the island 'Jazeera'. During British occupation the island was named after the then Deputy Commissioner of Chittagong Mr. Martin as St. Martin Island. The local names of the island are "Narikel jinjira" which means 'Coconut Island', and "Daruchini Dwip" which means "Cinnamon island". It is the only coral island in Bangladesh.

Cox's Bazar (Bengali: কক্সবাজার, pronounced [kɔksbadʒaɾ]) is a city, fishing port, tourism centre and district headquarters in southeastern Bangladesh. It is famous mostly for its long natural sandy beach, and it is infamous for the largest refugee camp in the world. It is located 150 km (93 mi) south of the divisional headquarter city of Chittagong. Cox's Bazar is also known by the name Panowa, which translates literally as "yellow flower". Another old name was "Palongkee". The modern Cox's Bazar derives its name from Captain Hiram Cox, an officer of the British East India Company, a Superintendent of Palongkee outpost. To commemorate his role in refugee rehabilitation work, a market was established and named after him. The municipality covers an area of 6.85 km2 (2.64 sq mi) with 27 mahallas and 9 wards and as of 2012 had a population of 51,918. Cox's Bazar is connected by road and air with Chittagong.

From the early 9th century the greater Chittagong area, including Cox's Bazar, was under the rule of Arakan kings until its conquest by the Mughals in 1666 AD. When the Mughal Prince Shah Shuja was passing through the hilly terrain of the present-day Cox's Bazar on his way to Arakan, he was attracted to its scenic and captivating beauty. He commanded his forces to camp there. His retinue of one thousand palanquins stopped there for some time. A place named Dulahazara, meaning "one thousand palanquins," still exists in the area. After the Mughals, the place came under the control of the Tipras and the Arakanese, followed by the Portuguese and then the British. The name Cox's Bazar originated from the name of a British East India Company officer, Captain Hiram Cox, who was appointed as the Superintendent of Palonki (today's Cox's Bazar) outpost. He succeeded Warren Hastings, who became the Governor of Bengal following the British East India Company Act in 1773. Cox embarked upon the task of rehabilitation and settlement of the Arakanese refugees in the area. He rehabilitated many refugees in the area, but died in 1799 before finishing his work. To commemorate him, a market was established and named after him, called Cox's Bazar. Cox's Bazar was first established in 1854 and became a municipality in 1869. After the Sepoy Mutiny in 1857, the British East India Company was highly criticised on humanitarian grounds, specially for its opium trade monopoly over the Indian Sub-Continent. However, after its dissolution on 1 January 1874, the company's assets, including its armed forces, were acquired by the British Crown. After this takeover, Cox's Bazar was declared a district of the Bengal Province under the British Crown.

Sajek Valley - সাজেক ভ্যালি / মেঘের উপত্যকায় জীবন is an emerging tourist spot in Bangladesh situated among the hills of the Kasalong range of mountains in Sajek union, Baghaichhari Upazila in Rangamati District. The valley is 1,476 feet (450 m) above sea level. Sajek valley is known as the Queen of Hills & Roof of Rangamati.

If you want to see how beautiful Bangladesh is then you should visit Sajek valley before you die. Take two days to take the time to look at this beauty, which will be enriched by your beautiful memories. A trip to Sajek may be one of your memorable trips ever in your lifes.