In the middle of the lobby of the Radisson SAS Hotel in Berlin stands a AquaDom standing 25 meters tall and is the largest cylindrical aquarium ever built. It’s filled with about 900,000 liters of seawater and has 2600 fish of 56 species.

Yerevan residents celebrate Armenian Prime Minister's Serzh Sargsyan's resignation in Yerevan, Armenia, Monday, April 23, 2018. Sargsyan resigned unexpectedly on Monday, an apparent move to bring to an end massive anti-government protests. (Photo by Amos Chapple/RFE/RL)

Commandos of the “Underwater Defence” (SAS), the special operation unit of the Turkish Navy take part in a military training in Istanbul, Turkiye on June 13, 2022. (Photo by Ali Atmaca/Anadolu Agency via Getty Images)

An environmental activist performs during a protest in front of the headquarters of Brazilian mining company Vale SA in downtown Rio de Janeiro, Brazil, November 16, 2015. The collapse of two dams at a Brazilian mine, owned by Vale SA and BHP Billiton Ltd, has cut off drinking water for quarter of a million people and saturated waterways downstream with dense orange sediment that could wreck the ecosystem for years to come. Nine people were killed, 19 are still listed as missing and 500 people were displaced from their homes when the dams burst at an iron ore mine in southeastern Brazil on November 5. (Photo by Sergio Moraes/Reuters)

Armenian police officers detain a protestor during an opposition rally in the Freedom Square in Yerevan, Armenia, 12 November 2020. Protesters demanded the resignation of Armenian Prime Minister Nikol Pashinyan and his government. The unrest and protest erupted in Yerevan on 10 November 2020 after Armenian Prime Minister and Presidents of Azerbaijan and Russia signed a trilateral statement announcing the halt of ceasefire and all military operations in the Nagorno-Karabakh conflict zone. (Photo by Stepan Poghosyan/EPA/EFE)

Men look on from the banks of Rio Doce (Doce River), which was flooded with mud after a dam owned by Vale SA and BHP Billiton Ltd burst, as the river joins the sea on the coast of Espirito Santo in Regencia Village, Brazil, November 22, 2015. (Photo by Ricardo Moraes/Reuters)

“A Brazilian hotel was evacuated in the capital, Brasilia, on Monday after a man took hostage an employee who was held for hours before he was safely released to police. Firefighters and police cordoned off the area and about 300 guests and other employees left the hotel – some reportedly told to leave by the man who took the employee hostage”. – Associated Press. (Photo by Evaristo Sa/AFP Photo)

Children run next to a paraglider wearing Santa Claus costume landing to deliver gifts to refugee children from Karabakh region, near the village of Akunk, outside Yerevan, on December 26, 2023, as part of “ParaSanta”, an event organised by the Armenian Paragliding Club. (Photo by Karen Minasyan/AFP Photo)