The urban gardens of Trenton’s historic Mill Hill neighborhood will be open to visitors Saturday, June 13, from noon to 5 p.m., rain or shine. This is the 24th consecutive year for the annual event, which draws visitors from all over the area to view some of the region’s best examples of urban and small space gardening.

This year’s tour is themed “The City Soirees: Behind the Garden Gates.” Mill Hill is known for its unique collection of 19th century row homes, and many have distinctive gardens that are carefully tended by residents. Gardens are as varied as the houses they border, ranging from tidy and traditional to modern and naturalistic.

Proceeds from the tour help fund the Old Mill Hill Society Neighborhood Restoration Grant program, which aids homeowners in restoring and maintaining the area’s landmarks and historically significant sites.

Tickets are $10 in advance or $15 the day of the tour, and can be purchased by cash, check, or credit card. Register and begin the tour at Artworks, 19 Everett Alley at South Stockton Street. Ample free parking is available.The maps distributed double as admission tickets. For more information, visit trentonmillhill.org.