Casa de la Vall served as the parliament building for the tiny Pyrenean nation of Andorra between 1702 and 2011. Built in 1580 as a mansion for the wealthy Busquets family, it contains the country’s one and only courtroom – the Tribunal de Corts. With a past going back nearly five centuries, it’s no wonder that some visitors have reported ghostly footsteps and disembodied whispers echoing around these historic halls. Perhaps it's the spirits of former rulers and politicians attending to unfinished business? Both self-led and guided tours are offered, and there’s an escape room too.

The eeriest attraction in every European country, ranked