An unearthed time capsule beneath the Transamerica Pyramid shows a glimpse of San Francisco's past
The Transamerica Pyramid's time capsule highlights a transformative era in San Francisco's history and contrasts past construction speed with today's lengthy processes.
North Korea's tallest building is an abandoned hotel that has never hosted a single guest. Take a closer look at the 'Hotel of Doom.'
The 105-story 'Hotel of Doom,' which is also North Korea's tallest building, has never hosted a single guest. Construction began almost 40 years ago and it is not yet complete.