Phoenix sits on a city the Hohokam abandoned around 1450 — 800 km of hand-dug canals still shape the street grid. Three days trace that arc: platform mounds, 1870s adobe, the copper-boom Capitol, and the neighbourhoods built by people the boom excluded.
A Hohokam platform mound occupied AD 450–1450, renamed S'edav Va'aki Museum in 2023 at the request of the O'odham. Walk the ruin trail past the mound, ballcourt and replica pit houses. Open Tue–Sat 9:00–16:45, closed Sun–Mon in summer.
Exposed prehistoric Hohokam canal beds — the actual earthen channels, cut 1,000+ years before Anglo settlement, sitting beside the modern replacements that reused them. Interpretive signs explain how the 800 km network watered 40,000 hectares.
Roughly 4,000 Hohokam petroglyphs pecked into basalt walls above a seasonal pool in the Superstition Mountains. The 4.3 km round-trip trail climbs 200 m through saguaro to panels of spirals, deer and anthropomorphs dated AD 750–1450.
The four-storey caliche Great House, built by the Hohokam around 1350 and the first US archaeological reserve (1892). Its walls align with solar and lunar events; the 1932 steel shelter above it is itself a landmark of preservation history.
The 1901 territorial Capitol, built of local malapai and granite with a copper dome — 6,700 kg of Arizona copper, refreshed in 1976. Restored 1912-era House and Senate chambers, plus the USS Arizona relics and battleship silver service.
A 4-hectare plaza east of the Capitol holding 30 monuments, including the salvaged anchor and signal mast of the USS Arizona, the Arizona 9/11 Memorial's pierced-steel canopy, and markers to Navajo Code Talkers and Pearl Harbor's 1,177 dead.
An 1895 Eastlake Victorian by architect A.P. Petit, the last intact block of Phoenix's original 1870 townsite. Guided tours cover Dr Roland Rosson's household, the 1890s water and telephone systems, and the square's near-demolition in the 1970s.
Opened 1928 on the site of Phoenix's first public school, with Arizona's first elevators and air-cooled rooms; Carole Lombard and Clark Gable stayed here. The Italian Renaissance facade and lobby survive as downtown's clearest Jazz Age fabric.
Phoenix's segregated Black high school from 1926 to 1954, closed by the Arizona ruling that preceded Brown v. Board. Volunteer-run exhibits cover Black homesteaders, the Buffalo Soldiers and the school's alumni; open Tue–Fri 10:00–14:00.
The 1929 Sun Mercantile warehouse, built by grocer Ching Shing Yee, is the last structure of Phoenix's Chinatown, which stood at 1st and Madison until the 1980s. Nearby Warehouse District brick buildings date to the 1890s produce-shipping era.
Homesteaded 1886 by William Bartlett, with 13 original buildings — the 1895 adobe ranch house, fruit-packing shed, blacksmith shop and guest house — plus a rose garden and the descendants of the ranch's peacocks. Grounds free; house tours Sat.
Grand Avenue cuts the grid diagonally on the 1880s stage road to Wickenburg; its 1920s–50s storefronts now hold galleries. Nearby, the Golden Gate Barrio's displaced families are remembered at the 1928 Sacred Heart Church, left standing alone.