Tourists are strictly forbidden from entering what is widely considered to be India's most haunted building before sunrise or after sunset.
During daylight hours the Bhangarh Fort in Rajasthan is a hugely popular attraction for those on the tourist trail who find themselves enchanted by the remarkable standard of its preservation.
Those who are a little less stout of heart, or who take the countless ghostly tales connected to the fort seriously, aren't as quick to enter.
A sign installed by the government at the gate of the building ominously warns that all access is strictly forbidden when the sun is not up.
All access points to the fort are firmly and religiously locked until the sun rises again.
Locals claim to have heard women screaming and crying from within its bowels at night, when the sound of bangles breaking and strange music can sometimes be heard.
Others claim to have seen shadowy wisps and flashing lights among the structures, while some have smelt a special perfume drifting from the ruins.
If a person enters the fort after sunset, they will never ever come out again, locals say.
The fort has been an object of terror among those living nearby for hundreds of years, during which time stories of the horrors that lie within have only grown darker.
The first, most commonly touted legend relating to its ghoulish reputation concern its origins, when the founder of Jaipur King Madho Singh visited sage Bala Nath and asked him permission to build the fort.
The mystic man said yes, so long as at no point would the fort be built so high that its shadow should fall upon his home.
The king readily agreed and began building Bhangarh Fort.
All was well until an ambitious successor of the king started building upwards from the foundations, casting a shadow on Bala Nath's home as he did.
Understandably the sage cursed the fort, ensuring that everyone who lived within it would be doomed to a life without rebirth, stuck in limbo to roam the ruins for eternity.
He also rendered it impossible for any roof built in the fort not to collapse.
According to another tale, a priest who was a practitioner of black magic fell in love with a beautiful Bhangarh princess whose looks were known of far beyond the borders of India.
One day, the priest followed the princess to the marketplace and offered her a love potion, which she refused having been tipped off about his dishonourable intentions.
She threw the amorous concoction onto a nearby rock which caused it to roll onto the priest and crush him to death.
In the moments before he slipped off his mortal coil, the priest cursed the village and fort, condemning it to destruction and desolation.
The entire population of the area was slaughtered in a great battle a year later.
