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Checkpoint: Plaka
Navigate to the Plaka district at the foot of the Acropolis and check in.
Checkpoint: Plaza de España
Navigate to Plaza de España, the curved tiled showpiece of Seville, and check in.
Checkpoint: Plaza Mayor
The grand square at the heart of old Madrid. Navigate to Plaza Mayor and check in once you are surrounded by red-and-yellow facades.
Checkpoint: Point State Park
Navigate to Point State Park at the western tip of downtown and check in at the central fountain.
Checkpoint: Ponce City Market
Continue north on the BeltLine to Ponce City Market and check in at the main entrance on the Eastside Trail side.
Checkpoint: Ponte Vecchio
Navigate to the Ponte Vecchio over the Arno and check in.
Checkpoint: Powell's City of Books
Navigate to Powell's City of Books on Burnside and check in at the main entrance.
Checkpoint: Praça do Comércio
Navigate to Praça do Comércio (Commerce Square) by the river and check in.
Checkpoint: Prague Castle
Navigate up to Prague Castle (Pražský hrad) and check in once you can see St. Vitus Cathedral.
Checkpoint: Puerta del Sol
Madrid's symbolic center. Navigate to Puerta del Sol and check in.
Checkpoint: Rainbow Row
Navigate to Rainbow Row on East Bay Street, between Tradd and Elliott Streets, and check in across the road from the pastel houses.
Checkpoint: Reading Terminal Market
Navigate to Reading Terminal Market on 12th and Arch and check in at the main entrance.
Checkpoint: Real Alcázar
Navigate to the Real Alcázar of Seville and check in.
Checkpoint: Reichstag
Navigate to the Reichstag building and check in at the steps.
Checkpoint: Retiro Park
Time for greenery. Navigate to Retiro Park and check in.
Checkpoint: Rhode Island State House
Walk north to the Rhode Island State House on Smith Street and check in on the front lawn.
Checkpoint: Rialto Bridge
Navigate to the Rialto Bridge over the Grand Canal and check in.
Checkpoint: Ribeira
Navigate to the Ribeira waterfront along the Douro river and check in.
Checkpoint: River Arts District
Walk or rideshare west to the River Arts District (RAD) along the French Broad River, and check in by any open-studio building.
Checkpoint: River Street
Walk down to River Street along the Savannah River and check in by the waving girl statue or the Hyatt steps.
Checkpoint: River Walk
Walk one block south and down to the River Walk. Check in near the main bend by the Aztec Theater or Hyatt steps.
Checkpoint: Rocky steps
Navigate to the steps of the Philadelphia Museum of Art (the Rocky steps) and check in at the bottom.
Checkpoint: Roman Forum
Navigate to the Roman Forum and check in.
Checkpoint: Ross's Landing
Navigate to Ross's Landing on the downtown riverfront, beside the Tennessee Aquarium, and check in.