Explore an enormous cast of an Allosaurus skeleton from the Jurassic Period, a mega-sized replica of an extinct megalodon shark, a Foucault pendulum that proves the earth is spinning — and many more marvels at this Balboa Park institution marking its 150th anniversary in 2024. The venue showcases the natural history of Southern California and the Baja California Peninsula via fascinating exhibits spanning four floors, a giant screen theater, summer camp, free guided hikes, talks, lectures, community science projects and an expansive research collection. As a birthday present to San Diego, the museum will open a new native plant garden in late spring. The Museum’s February Merch-A-Month item is an enamel pin designed with nature lovers in mind. The pin is available in the Museum store now while supplies last! The pin is $10, and as always, members get a 10% discount. Visit 10 a.m.-5 p.m. daily and during “Nat at Night” on select Fridays, when the venue can be enjoyed until 10 p.m.