Asakusa Underground Street appeals to a specific type of visitor interested in retro Tokyo architecture, urban history, or off-the-beaten-path experiences. If you appreciate Showa-era nostalgia, vintage aesthetics, or want to see a less tourist-oriented side of Asakusa, a brief 10-15 minute detour through the underground passage can be worthwhile. However, if your time is limited and you're primarily interested in traditional temples, gardens, and major sightseeing spots, you may prefer to focus on above-ground attractions like Sensoji Temple, Nakamise Shopping Street, and the Sumida River area.