Mussenden Temple, perched dramatically on its clifftop above Downhill Strand, is one of the Causeway Coast’s most photographed landmarks - a small domed library building that looks like it shouldn’t be able to cling to the cliff edge the way it does.
Downhill House & the Estate

The wider Downhill Demesne estate includes the ruins of Downhill House, an English-style mansion designed by architect Michael Shanahan for Frederick Hervey. The National Trust owns and manages the whole estate, including the Demesne grounds and Hazlett House.
Admission

The specific current admission prices couldn’t be independently confirmed in this fact-check pass - every source found citing figures for adult/child/family admission traced back to this same article rather than an independent listing. Check directly with the National Trust before relying on a specific number. One real, honest note worth keeping from a previous visit: arriving off-season (February), the gate was sometimes unattended and free to enter - though the Temple itself was closed that day, meaning only the grounds were accessible. Don’t assume this applies outside quiet periods.
Parking

Two car park options, not just one. Lion’s Gate car park is close to the site amenities (toilets, picnic areas) and uses Pay by Phone parking - chargeable for non-members, free for National Trust members and Blue Badge holders. Bishop’s Gate car park is free for everyone, member or not - a genuinely useful budget alternative that wasn’t mentioned in earlier versions of this page, if you don’t mind a slightly longer walk in.
Getting There on Foot

A real walking route exists from Castlerock: starting at a car park at the western end of Tunnel Brae, over a stone step-over stile, along the caravan park boundary, across the headland locals call “The Moor,” and onto a surfaced woodland path toward the temple and gardens - a genuinely scenic approach if you’d rather walk than drive in.


