SEOUL, South Korea — A British man was detained after climbing more than half way up the world’s fifth-tallest skyscraper in Seoul with only his bare hands on Monday, authorities said.

French climbing experts Group F swing high above the streets of Seoul, South Korea, to install a $6 million fireworks display on one of the world’s tallest buildings, the Lotte World Tower.

The Lotte World Tower is the tallest building in South Korea and the fifth tallest building in the world. The high-rise recently won the Emporis Skyscraper Award, which honors the top 10 ...

The project, named the Cloud, is a proposal for twin towers in Seoul. The design and responses to it have been all over the architecture blogosphere since the plans were unveiled in December.