Visitors stand the roof top of an abandoned building in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha TPX IMAGES OF THE DAY

A visitor walks inside an abandoned building in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha

A visitor walks inside an abandoned building in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha

Visitors sit on the roof top of an abandoned building in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha

Visitors climb an unfinished structure as they enjoy the roof top of an abandoned building in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique Tower, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha TPX IMAGES OF THE DAY

Visitors stand inside an abandoned building in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha

A visitor sits on a balcony of an abandoned building in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha

A visitor jumps with a broom on an unfinished structure of an abandoned building in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha

Visitors enjoy the roof top of an abandoned building in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha

A couple enjoy the sunset on the roof top of an abandoned building in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha

Central Bangkok and the Chao Phraya River are seen from an abandoned skyscraper in Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha

A view of an abandoned building is seen at Bangkok April 19, 2015. The abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha

Visitors take photographs from a top of an abandoned skyscraper in Bangkok April 19, 2015. TThe abandoned building, known as Sathorn Unique, dubbed the 'ghost tower' was destined to become one of Bangkok's most luxurious residential addresses but construction was never completed as the Thai economy was hit during the 1997 Asian Financial Crisis. Now, many travellers visit and explore the 49-storey skyscraper. REUTERS/Athit Perawongmetha