As architecturally dense and historically rich as our dear city is, we’ll never know everything--but can’t we at least try? The tenth annual Open House New York Weekend is upon us this Saturday and Sunday, with 300 events granting access to rarely seen spaces including historic landmarks and cathedrals, sustainable building projects and even private residences.

If you’ve been to the festival in the past and are looking for a fresh spin, here are three new, guided tours on our personal list.

Fading Ads of New York City Follow Frank Jump (photographer and author of Fading Ads of New York City) as he walks groups through Chelsea (Saturday, 11 a.m.) and Tribeca (Sunday, 11 a.m.), discussing the stories of weathered but still visible ads from other eras.

Museum of Reclaimed Urban Space Discover the ongoing history of how abandoned buildings and lots in the East Village have been transformed into socially conscious spaces, like community gardens. (Saturday and Sunday; 3 p.m. and 5:15 p.m.)

Peace Bike Ride Cyclists (even amateurs), join Nadette Stasa of the environmental organization Time’s Up! on a laid-back, three-hour tour of significant sites of peace downtown, such as the Tibet House US, Teardrop Park and the former residence of John Lennon and Yoko Ono. (Saturday and Sunday; 11 a.m.)

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