In the past, the railway northeast from Bangkok went only as far as Korat (Nakorn Ratchasima), but in 2473 B.E. an extension to Ubon Ratchathani was begun and it was completed in 2474 B.E. The construction of the railway enabled Warin Chamrab district to become a centre for goods moving to and from Bangkok.

Ubon Ratchathani College first opened to students in academic year 2531 B.E. Later, in 2533 B.E., the status of the institution was raised to Ubon Ratchathani University with the event being announced in a Royal Decree. The 30^th July is recognised as being the date ofestablishment of the university. Ubon Ratchathani University is the second most important institute of tertiary education in the northeast, with Khon Kaen University being the most important.

His Majesty the King Bhumibol Adulyadej paid his first ever visit to Ubon Ratchathani in 2498 B.E. and was accompanied by Her Majesty the Queen Sirikit. The Royal couple visited Ubon Ratchathani City Hall and Suphatanaram Temple, followed by a visit to Kaeng Saphue in Phibun Mangsahan district.

The museum was constructed in 2461 B.E., or during the reign of Rama 6, and was originally used as the city hall. The building was built on land belonging to Prince Sappasittiprasong, the governor of Ubon Ratchathani during King Chulalongkornûs reign. Later, there was an expansion of government agencies and it was decided to build a new city hall. The old city hall was then handed over to the Department of Fine Arts for restoration and use as Ubon Ratchathani National Museum in 2526 B.E. Her Royal Highness Princess Maha Chakri Sirindhorn officially opened the museum on 30^th March 2532 B.E.

Construction of the bridge started in 2496 B.E. The total cost was over eight million baht, which was taken from public funds. Design and construction of the bridge was carried out and supervised by the Department of Civil Engineering, Ubon Ratchathani Municipality. The bridge is 9 metres wide and 450 metres long. The engineer who supervised the construction work was Khun Phrasit Suttatkul (who later was the first Civil Engineer of Ubon Ratchathani Municipality. Khamjorn Construction Company was the company

The National Archives Office is run by the central government under the direction of the Department of Fine Arts, which is under the Ministry of Education. The foundation stone was laid by His Royal Highness Crown Prince Maha Vajiralongkorn on Wednesday 24^th May 2538 B.E. and the office was formally named "The Crown Prince National Archives Office, Ubon Ratchathani". It is an institution that every  country maintains in order to preserve documents detailing the work of the civil service as historical

The Ubon Ratchathani Law Courts were built in 2515 B.E. in the times of Police Major General Wichien Srimuntorn, an ex-governor of Ubon Ratchathani. The foundation stone was laid during a ceremony held on the 27^th August 2515. The ceremony was presided over by Somdet Phra Maha Wirawong, a monk from Sri Mahathat Temple, Bang Khen, Bangkok.
Later, on the 16^th January 2519 B.E., Mr. Detchart Wongkomonchet, the governor of Ubon Ratchathani at the time, respectfully requested the presence of His Majesty the King

The 21^st Air Force Base has a long history, which began in June 2464 B.E. when there was a breakout of smallpox and cholera in Warin Chamrab district, Ubon Ratchathani province. Doctors and medical supplies were sent by air from Bangkok to Ubon Ratchathani and they arrived in time to save the lives of many.

The province assigned the Penitentiary Department to build a hospital on the 1st January 2478 B.E. with a budget of 81,000 baht. The hospital comprised of three brick-built buildings which were the administration, the operating theatre, and the mortuary buildings. All other buildings were constructed from wood. There were three one-floor hospital wards, which could accomodate up to 75 patients.