Boston City Hall, Boston, Massachusetts

Although it may have been considered hip and cool for its time, the building is often criticized today for its dreariness and out-of-place architecture. Built in 1968, it is a prominent example of the brutalist architectural style.

Pompidou Center, Paris, France

Even Paris, one of the most beautiful cities in the world, has some buildings that are actually not so beautiful. The Pompidou Center, a public library and museum of modern art, looks as if it was still under construction.

Petrobras Building, Rio de Janeiro, Brazil

Located in Rio de Janeiro, Brazil, the Petrobras Building is the headquarters of Petrobras, a semi-public Brazilian multinational corporation in the petroleum industry. The uninspiring design of the building resembles a blend of Tetris and game of Jenga.

First World Hotel, Pahang, Malaysia

Colorful buildings are usually perceived as cheerful and optimistic but this giant Malaysian hotel (with over 6,100 rooms) is a perfect example of how a paint job can just ruin everything.

Federation Square, Melbourne, Australia

The Federation Square is a mixed-use development in the inner city of Melbourne, Australia. Its disconcerted design is made worse by the web of wires which hang above the structures.

CCTV Headquarters, Beijing, China

Serving as headquarters to China Central Television, this interestingly shaped, 44-story building located in downtown Beijing is also known as the “squatting man”. A very apt nickname indeed.

Aoyama Technical College, Tokyo, Japan

The design of this Japanese college is – according to their web sites – supposed to represent a new order achieved through tolerance of chaos. We think they totally succeeded in the chaos department.

Museum of Pop Culture, Seattle, Washington

Designed by the renowned Canadian-American architect Frank Gehry, the Museum of Pop Culture is located on the campus of Seattle Center in Washington. The building is undoubtedly interesting but not very pleasing to the eye.

National Library of Kosovo, Pristina, Kosovo

There are many things that the National Library of Kosovo resembles but none of them are beautiful.

Embassy of Russia, Havana, Cuba

Located in the Miramar District of Havana, the Embassy of Russia is a striking constructivist building that was completed in 1987. With its bizarre shape of a syringe, it probably is the ugliest embassy building in the world.

—List25