The Citadelle Art Foundation

The Citadelle Art Foundation is at 520 Nelson Ave. The 8,000-square-foot Citadelle mansion—embellished with elegant brickwork, columns and stained-glass windows—was built in 1910 as a church. It functioned as such until the 1970s, when it was sold and converted to a private residence. The owners later donated their home, along with their impressive art collection within, as a public art museum.

You'll start your visit with a video about the Citadelle's history and then set off on your own to explore the property. A handheld audio wand that describes 20-plus points of interest enhances the tour. More than 135 watercolors, pastels, oil paintings, pen-and-ink drawings and other works of American and European artists are on display. You'll also see a collection of some 250 antiques and a gallery devoted to changing exhibits.

If the weather's nice, you can unwind in four lovely gardens: The Four Seasons Garden, with ivy- and moss-covered brick walls and English sculptures; the Hathoot Garden, a tree-shaded, stone-adorned meadow; the Sculpture Garden, with a large bronze sculpture as its centerpiece; and the Pavilion Garden, featuring a classical-style pavilion and giant gates.

Guided tours are available. Picnicking is permitted. Time: Allow 1 hour, 30 minutes minimum.