Horror fiction rarely starts from nothing. Some of the most unsettling books ever written trace back to real buildings, ruins and water towers that still stand — and most of them welcome visitors. A roundup by Atlas Obscura pulls together the best of them, from Gothic abbeys on the Yorkshire coast to a Micronesian stone city that may have given us Cthulhu.

Bram Stoker dominates the list. Whitby Abbey in England, a ruined monastery wrecked during the Reformation, is where he first read about Vlad the Impaler — and in Stoker's novel, Count Dracula's ghost ship makes landfall at Whitby itself. Scotland's New Slains Castle near Cruden Bay, which Stoker visited repeatedly between 1892 and 1910, is name-checked in two of his lesser-known novels; his signature is still visible in the guest ledger of the nearby Kilmarnock Arms. Romania contributes two contenders: Bran Castle, where Vlad was reportedly held in 1462 and which now runs an immersive Halloween event, and 15th-century Corvin Castle in Hunedoara, open daily for tours across its wooden bridge and banquet halls.

Stephen King's Maine gets two entries. His former Bangor mansion, with its spider-and-dragon gate, now serves as an archive of his papers, while the Thomas Hill Standpipe down the street — where he wrote in a nearby park — inspired the spot where Stan Uris meets Pennywise in "It." It has its own ghost story too: a boy's fatal 25-foot fall in 1940, after which public access closed until quarterly tours began in 1991.

H.P. Lovecraft fans can hunt for his fictional Necronomicon at the former Bradford College in Haverhill, Massachusetts, where he supposedly stashed it in a tunnel beneath Tupelo Pond — the tunnels are real, the book less so. Far more remote are the Nan Madol ruins in Micronesia, megalithic structures built on nearly a hundred artificial islands in the 12th and 13th centuries, widely believed to have shaped Lovecraft's sunken corpse-city R'lyeh. There's no visitors centre; a local guide is essential.

Rounding things out: Shirley Jackson's Hill House is rumoured to be Bennington College's Jennings Hall in Vermont; Horace Walpole's Strawberry Hill in London, birthplace of the Gothic novel, now hosts Halloween bat walks and a Victorian Magic Lantern Show; Charles Dickens's taxidermied raven Grip sits in Philadelphia's Free Library beside Poe manuscripts; and Mary Shelley wrote Frankenstein at Villa Diodati on Lake Geneva during the famously stormy summer of 1816 — privately owned, but visible from the Chemin de Ruth path.

For book lovers, these are holidays with a plot. Each stop works as a standalone trip or as a spine for something bigger — a Dracula-themed swing through Yorkshire, Scotland and Romania, or a New England loop connecting King, Lovecraft and Jackson country. Several sites lean into the season with October events, so timing a trip around Halloween pays off. The original roundup comes from Atlas Obscura.