HTX Tunnels

HTX Tunnels is a mobile guide to downtown Houston’s underground tunnel network. Find the best way between towers, food halls, and transit stops without stepping outside. Use the live directory to: • Search by building, restaurant, or access point • See open entrances and hours • Follow tunnel routes with landmarks and corridor notes • Snap to your location for the closest entry • Spot ADA‑friendly paths and detours Location access is optional and is used only to show your position and improve routing accuracy. Motion sensors can help with underground positioning.