Wailuku
A short paved loop of the plants early Hawaiians brought and grew in ʻĪao Valley.
Out-of-state visitors must reserve a timed entry at gostateparks.hawaii.gov before arriving; non-residents pay $5 per person entry plus $10 per vehicle parking (Hawaiʻi residents free with ID, no reservation). Open daily 7 AM–6 PM; park in the monument lot at the end of ʻĪao Valley Road.