For architecture buffs and design lovers, Open House New York Weekend is a veritable holiday. For two days every October, the doors to some of the five boroughs’ most important buildings are unlocked, allowing guests to experience the city in a new way and meet the people who design, build, and preserve New York. This year, 250 sites range from historic to contemporary and residential to industrial, and the event also includes walking tours, talks, and performances. Highlights include the 1920s gilded Loew’s Kings Theatre, Philip Johnson’s World’s Fair relic known as the New York State Pavilion, and Brooklyn Grange, the world’s largest rooftop farm.

We’ve teamed up with our friends over at OHNY to offer 6sqft readers the chance to win a Weekend Passport to the event, a unique VIP button that allows the wearer and a guest front-of-the-line access to all sites and programs that don’t require advance reservations.

Here’s how to enter:

Today is the last day to snap a picture (using your best photography skills, of course) of your favorite piece of architecture anywhere in the five boroughs. Share it with us on Instagram @openhousenewyork and @6sqft with the hashtag #sendmetoOHNY with the location. Tomorrow we’ll pick our favorite photo and send one lucky reader to OHNY in style.

Click here for more information about Open House New York Weekend 2015 >>