Doors Open Denver 2013 allows you to explore 66 of the city's iconic and historic buildings.
You can go inside buildings like the McNichols Civic Center Building and the Ellie Caulkins Opera House from 10 a.m. to 4 p.m. Sat. April 13 and Sun. April 14.
The theme of this year's event is "The City Beautiful: Then and Now," which recognizes Mayor Robert Speer's vision for the city and his lasting influence.
Doors Open Denver Event Guides, including maps, will be available at the McNichols Building, participating sites, kiosks along the 16th Street Mall and at tourist information centers.
Architects, landscape architects, historians and others with special knowledge of featured buildings lead walking tours of the buildings and city parks.
Tours last between 30 and 90 minutes. Space is limited, so free day-of registration is required.
Registration opens each morning at 7:30 a.m. at event headquarters: the McNichols Building at 144 W. Colfax Ave. Denver.
Registration is limited to two tickets per person and two tours per day, per person.
Day-of registration is done on a first-come, first-served basis and the most popular tours fill up early in the morning each day.
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