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ChangeCheckpoint: Bronze Fonz
Walk along the Riverwalk to the Bronze Fonz statue on the east side of the Milwaukee River, south of Wells Street, and check in.
Checkpoint: Brooklyn Bridge
Navigate to the Manhattan-side entrance of the Brooklyn Bridge and check in once you can see the cables running over the East River.
Checkpoint: Buckingham Palace
Navigate to the gates of Buckingham Palace and check in.
Checkpoint: Buda Castle
Navigate to Buda Castle on Castle Hill and check in.
Checkpoint: Burg Square
Navigate to the Burg, the smaller square one block east of the Markt, and check in.
Checkpoint: Cable Car bottom
Walk to the Cable Car bottom station on Lambton Quay (entrance through a small shopping arcade) and check in by the ticket booth.
Checkpoint: Cafe du Monde
Navigate to Cafe du Monde, the legendary 24-hour beignet stand at the French Market. Check in once the team can smell powdered sugar in the air.
Checkpoint: Calton Hill
Navigate to Calton Hill (or any vantage point above the city). Check in.
Checkpoint: Camelback Mountain
Drive west to the Echo Canyon trailhead at Camelback Mountain and check in by the trail register.
Checkpoint: Campus Martius
Navigate to Campus Martius Park in downtown Detroit and check in by the fountain.
Checkpoint: Canal Walk
Walk down to the Canal Walk along the James River and check in by the water near Brown's Island.
Checkpoint: Canyon Road
Walk east along Alameda and up Canyon Road. Check in once you reach the densest stretch of galleries (around the 600 to 700 block).
Checkpoint: Capitol Square
Navigate to Capitol Square in downtown Richmond and check in on the grounds of the Virginia State Capitol.
Checkpoint: Cardboard Cathedral
Walk to the Transitional Cathedral (Cardboard Cathedral) on Hereford Street and check in at the entrance.
Checkpoint: Cathedral and Giralda
Navigate to Seville Cathedral and the Giralda tower. Check in at the foot of the bell tower.
Checkpoint: Cathedral Square
Navigate to Cathedral Square in the centre of Christchurch and check in by the Chalice sculpture.
Checkpoint: Centennial Olympic Park
Navigate to Centennial Olympic Park in downtown Atlanta and check in at the Fountain of Rings.
Checkpoint: Centennial Park Parthenon
Navigate to the full-scale replica of the Parthenon in Centennial Park. Check in when the team is standing in front of its columns.
Checkpoint: Central Park
Time for some greenery. Navigate to Central Park and check in once the skyscrapers fade behind a wall of trees.
Checkpoint: Centre of New Zealand
Walk east across the river and up Botanical Hill to the Centre of New Zealand monument. Check in at the summit marker.
Checkpoint: Chain Bridge
Navigate to the Chain Bridge (Széchenyi Lánchíd) over the Danube and check in.
Checkpoint: Chapel of the Holy Cross
Drive south to the Chapel of the Holy Cross off Highway 179 and check in at the chapel approach.
Checkpoint: Charles Bridge
Navigate to Charles Bridge over the Vltava and check in.
Checkpoint: Charleston City Market
Walk north up Meeting or East Bay to the Charleston City Market on Market Street. Check in at the main entrance.