The Gateway Arch (St. Louis, MO) tram system—unique Montgolfier-inspired egg-shaped capsules running on curved tracks inside the legs—takes 4 minutes each way to the observation deck (630 ft / 192 m).
Tickets: Timed entry, buy online (recreation.gov) weeks ahead. Cost: $15–19 adult. Hours: 9am–6pm (varies season). Parking: Stadium garages, MetroLink (Laclede's Landing station).
4 minutes up. 4 minutes down. The memory lasts decades.