Many of the changes Trump wants to make to the White House and the city are facing legal challenges. Some are reversible, while others could reshape the nation's capital for generations to come.

The pool is being resurfaced in a shade more akin to that of a swimming pool. It's one of many physical changes Trump is planning for the nation's capital.

President Trump says the Kennedy Center must close for renovation. Members of Congress and two lawsuits contend the real reason is mismanagement, artist cancellations and declining ticket sales.

The seven-member body, whose ranks are composed of Trump appointees, was expected to approve the arch. The proposed monument strongly resembles Paris' Arc de Triomphe, but almost 100 feet taller.

The proposed 250-feet-tall, white-and-gilded monument would stand on the National Mall in Washington, D.C., by the Potomac River.

The groups, which include the American Institute of Architects, are asking for compliance with historic preservation laws and to secure approval from Congress.

The Pritzker Prize was awarded Thursday. "In every work, he is able to answer with radical originality, making the unobvious obvious," said fellow Chilean architect and prize chair Alejandro Aravena.

Gehry transformed modern architecture with exuberant buildings such as the Walt Disney Concert Hall and the Guggenheim Museum. "I've always been for optimism and architecture not being sad," he said.

The White House has fired all six members of the U.S. Commission of Fine Arts, the independent federal agency that reviews design plans for monuments, memorials, coins and federal buildings.

In Pamplona, where the bulls run, a scientist studies the physics of crowds.

President Trump is demolishing the East Wing to make room for a ballroom. His administration says he's continuing a presidential legacy of White House renovations, but this is the biggest in decades.

One kind of tiny ant can serve as a monumental example for how to keep members of a community safe from pathogens. A new study shows how they do it.

It's the peak of the fall migration season. This is when bird deaths from window collisions tend to spike, even though simple solutions can prevent this.

Columbus has received another dubious distinction by landing on a list for “100 Ugliest Public Buildings in the U.S.”

Roland Reisley is the last original client of Frank Lloyd Wright, still living in the Usonian home designed by the famed architect. Even after 73 years, he told NPR, he still marvels at the beauty of the home.