You may have heard of this free-to-enter oasis in the sky but if you haven’t, cancel your plans and head up to the latest urban park that sits 70 feet above the street, is 4 blocks long and features a living roof, walking trails, dancing fountains, a children’s play area and an amphitheater.

This tucked-away park is hiding one of the city’s most interesting outdoor art and sculpture gardens. The story goes that Demetrio Braceros, who maintained the park for over 20 years had transformed Cayuga Park’s naturalistic surroundings into whimsical woodcarvings. There are both small and large wood sculptures and makes for a great game of I spy.

This real-working giant camera was built in 1946, based off of Leonardo Da Vinci’s work, and is on the National Register of Historic Places. When it’s open, you can go inside and walk around the projection table—observing the camera in action capturing live images from the surrounding Pacific Ocean, Ocean Beach, Seal Rocks, Marin and more. You can also see a small holograph collection that was added in 1979.

Everyone knows about the Sutro Baths but keep your eyes peeled on the rock—or bring your binoculars so you can spot the heart shape that formed in the middle of it. Best viewing is from the bottom of the trail where the pools will be on your left and a cave on the right. Walk to the right to stand in front of the concrete ledge and look to your left to see the heart.

What used to be a 35-foot intricate rock maze created by an artist on the western end of San Francisco that is Land’s End park, has been re-imagined in the shape of a heart—rebuilt last year after the maze was destroyed by vandals. Hike your way over here to not only see the man-made formation, but take in the epic views of the Golden Gate Bridge.

Tap into you inner child at the Seward Street Slides. From 18th street walk west for four blocks to Douglass, then take a left onto Douglass and follow it until you find the Seward Mini Park. Two long, steep concrete slides are the main attraction, though they are not for tiny tots. Bring a piece of cardboard and wear sturdy pants. Closes at sunset.

This Dutch Windmill is located on the western section of Golden Gate Park and is one of two historic icons dating back to 1902. Serving once as a water pump for the area, the Dutch Windmill is now home to the Queen Wilhelmina (late queen of the Netherlands) Tulip Garden. While the best time to visit is during tulip season (Feb. & Mar.), you can still take in the lovely sight of other blooms in the serene surroundings.

Huntington Falls in Golden Gate Park may be artificial, but is still impressive—water cascades the length of Strawberry Hill and spills into Stow Lake. Insider Tip: To take this hidden gem up a level, climb the adjacent stairs past the surrounding sculpted rocks to look down over the top of Huntington Falls at Strawberry Hill. You can also explore the surrounding rock path and walk across the bridge in front of the falls.

68 POPOS exist in San Francisco and are compromised of “publicly accessible spaces in forms of plazas, terraces, atriums, small parks, and even snippets which are provided and maintained by private developers.” What we love about these hidden gems (especially Jonathan Borofsky's Human sculptures at 555 Mission Street) is that they are a priceless mix of urban development, art, culture and sometimes a handy cafe to offset those mid-day hangries.

This park checks all the boxes—360-degree epic view (on a clear day you can see the Golden Gate Bridge, Bay Bridge and all the way to East Bay hills), grassy spots for nosh-worthy picnics but our love for this spot is due to the wooden swing that makes you feel like you are touching the clouds.