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Checkpoint: Benefit Street
Cross the river and climb College Hill to Benefit Street, the "Mile of History", and check in among the colonial houses.
Checkpoint: Big Ben
Navigate to Big Ben (Elizabeth Tower) at the Palace of Westminster and check in.
Checkpoint: Big Four Bridge
Walk north to Waterfront Park and check in at the foot of the Big Four Bridge ramp over the Ohio River.
Checkpoint: Bishop's Palace
Walk to the Bishop's Palace on Broadway and check in in front of the grand Victorian mansion.
Checkpoint: Boise River Greenbelt
Walk south to the Boise River Greenbelt near Julia Davis Park and check in by the river path.
Checkpoint: Boston Common
Navigate to Boston Common, America's oldest public park. Check in once the team is standing on its grass.
Checkpoint: Botanic Gardens
Walk west through Hagley Park to the Christchurch Botanic Gardens and check in by the Peacock Fountain or the rose garden.
Checkpoint: Boulder Creek Path
Walk south to the Boulder Creek Path and check in beside the water.
Checkpoint: Bourbon Street
Navigate to Bourbon Street, the famous nightlife strip of the French Quarter. Check in once the music gets louder than your group chat.
Checkpoint: Brandenburg Gate
Navigate to the Brandenburg Gate at Pariser Platz and check in.
Checkpoint: 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.