1: Discover the world's most expensive abandoned structures, from crumbling castles to decaying mansions. Explore the eerie beauty of forgotten architecture.

2: The Ryugyong Hotel in North Korea stands as a stark reminder of failed ambition, costing billions to build before being abandoned.

3: The Michigan Central Station in Detroit, once a bustling transportation hub, now sits in decay, a haunting symbol of urban decline.

4: The City Hall Subway Station in New York City, a stunning example of Beaux-Arts architecture, has been closed to the public for decades.

5: Château Miranda in Belgium, a fairytale castle turned nightmare, lies in ruins after being abandoned for years following a tragic fire.

6: The Haludovo Palace Hotel in Croatia, once a luxury resort destination, now stands as a ghostly shell, a victim of financial ruin.

7: The Tat Tak School in Hong Kong, once a bustling educational institution, now stands empty and forgotten, a spooky reminder of neglect.

8: The Canfranc International Railway Station in Spain, once a grand symbol of transnational cooperation, now sits deserted and decaying.

9: The Sathorn Unique Tower in Bangkok, an ambitious skyscraper project, now sits unfinished and abandoned, a towering reminder of broken dreams.