The Legend of Heroes: Trails Beyond the Horizon challenges players with the Grim Garten, a massive dungeon that demands repeated visits over the course of the story. Unlocking Grim Portals to enter this mysterious realm is essential, as each new portal grants G-Tokens and Mira—currency that'll power up your party through Grimoire Decryption. Tracking down these portals isn't just an optional chore; it's a rewarding journey that pays off in new quartz options and alternate costumes, rewarding both completionists and those eager to strengthen their team early on.
All Grim Portal Locations in Trails Beyond the Horizon
There are 23 Grim Portals scattered across the world, appearing in nearly every town and even some unusual field locations during Van's Act III. You'll unlock the ability to scan for these portals starting in Act I Part 2. This list breaks down where and when you can expect to find each portal as you move through the story chronologically.
Act I Part 2 Grim Portal Locations
Edith – Old Town
This is the very first Grim Portal you'll encounter, marking an important plot progression. Its discovery sets the stage for your journey into the depths of the Grim Garten.
Edith – Riverside
Located by the entrance of the Underground Maintenance Tunnel, this portal is easy to miss unless you scan carefully near Riverside's waterway.
Edith – Tyrell District
You'll spot this portal perched between the waterway entrance and Tyrell Times, tucked away on a ledge. It’s worth approaching with patience to ensure you don’t overlook it.
Edith – Auber District
Just left of the academy's entrance gate, this portal offers a convenient access point for your visits to the Grim Garten from the Auber district.
Edith – Grand Circuit
Look left of the iconic ferris wheel in the Grand Circuit area to find this portal; its location makes it a good landmark for quick reference.
Edith – Blacklight District
Tucked to the left of the arena overlooking Blacklight District, this portal’s elevated position stands out once you know where to look.
Edith – Chardin District
Directly behind the Chardin building lies this next Grim Portal, subtly placed and best found using your scanner ability.
Act I Part 3 Grim Portals
Edith – Station Street
Head to the northeast corner of the map to discover this Grim Portal, one of several proving the game’s detailed world design.
Edith – Trion Mall
Located opposite the entrance to Trion Mall, this portal is well situated near a bustling commercial area.
Edith – Levre District
Just behind Cafe La Provence lies this Grim Portal, hidden enough to reward careful explorers in the Levre District.
Act II Van Route I Portals
Edith – Seiden District
Near the entrance to Seiden District, this portal sits just past the front stairs. Use your scanner to catch it tucked near a corner.
Edith – Centre Marche
In Centre Marche, this Grim Portal is perched beside a tree in a northwest alleyway, a subtle location that stands out once found.
Act 2 Kevin Route I Portals
Tharbad – Cultural District
As part of the story, you must discover this portal, making the Cultural District one of your critical early stops in Tharbad.
Tharbad – Entertainment District
Found in an open area to the right of the Entertainment District's entrance, this portal’s accessible location belies its importance.
Act 2 Rean Route I Portals
Basel – Artisanal District
Required by the story, this Grim Portal in Basel’s Artisanal District will be impossible to miss as you progress.
Basel – New Town
This portal sits behind the stairs to the left of Verne HQ, making it easy to associate with a recognizable landmark in New Town.
Act 2 Rean Route II Portals
Basel Institute of Science
Look for this Grim Portal near a tree to the left of the Institute’s entrance, a quiet spot that invites exploration.
Act 3 Van Route IV Portals
Anchorville
This portal is part of the story and must be found during your journey through Anchorville, a key narrative point.
Anchorville General Hospital – Exterior
Found left of the hospital’s entrance, this portal’s location beside an important building highlights the game’s attention to environmental storytelling.
Act 3 Rean Route 3 Portal
Longlai
Near some cars just east of Longlai Temple, this portal hides in plain sight, rewarding players who scan thoroughly.
Act 3 Kevin Route 3 Portal
Creil Village Ruins
On the left side of the Creil Village map, this portal completes your exploration of ruins and hidden areas in Kevin’s route.
Act 3 Van Route 6 Portal
Anchorville Logistics Center – Exterior
Surprisingly, this logistics center also hosts a Grim Portal, located in the northwest part of the map, adding depth to Anchorville’s environment.
Finale Grim Portal
Edith – Vantail District
By the Museum on the east side of the Vantail District map, this final Grim Portal rounds out your quest to find all portals and fully master the Grim Garten’s entrances.
