In the ideal modern lotr au, all locations should have an eery, abandoned vibe (like they do in the books). The kind of locations you stumble over on a road trip and are haunted by for the rest of your life.
Tom Bombadil’s house as an old tourist trap that hasn’t been altered since the 70s run by a too-friendly owner and his suspiciously beautiful wife.
Weathertop as a giant factory that became redundant decades ago and was left to rot.
Rivendell as a breathtakingly beautiful hotel that was fully booked every night in its heydey, but now is lucky to have more than two guests at a time.
Moria as an abandoned subway system… but is it abandoned?
Lothlórien as a fairytale themed amusement park built in the 50s that went out of business and was reclaimed by nature.
…I could go on.