4 Best Sights in Palm Beach and the Treasure Coast, Florida

The worldly sophistication of Florida's Gilded Age lives on at Whitehall, the plush 55-room "marble palace" Henry Flagler commissioned in 1901 for his third wife, Mary Lily Kenan. Architects John Carrère and Thomas Hastings were instructed to create the finest home imaginable—and they outdid themselves. Whitehall rivals the grandeur of European palaces and has an entrance hall with a baroque ceiling similar to Louis XIV's Versailles. Here you'll see original furnishings; a hidden staircase Flagler used to sneak from his bedroom to the billiards room; an art collection; a 1,200-pipe organ; and Florida East Coast Railway exhibits, along with Flagler's personal railcar, No. 91, showcased in an 8,000-square-foot Beaux Arts–style pavilion behind the mansion. Docent-led tours and audio tours are included with admission. The museum's Café des Beaux-Arts, open from Thanksgiving through mid-April, offers a Gilded Age–style early afternoon tea for $60 (11:30 am–2:30 pm); the price includes museum admission.

This restored home that dates from about 1924 is a small museum run by the Delray Beach Historical Society. It's furnished as though the original inhabitants still lived there and filled with period relics, including a pump organ donated by descendants of a Delray Beach pioneer family. There's a garden of native plants out front and two small bungalow-style buildings on the property that have displays on the town's architectural evolution and history. The cottage is a block north of Atlantic Avenue and right across from the Delray Beach Center for the Arts at Old School Square.

Take a look at how life once was at this modest pioneer outpost dating from 1898. Renovated to repair hurricane damage to its structure, it's a picture of life before South Florida became a resort area. Sitting atop an ancient Jeaga mound 20 feet high and looking onto the Jupiter Inlet, it has Cape Cod as well as Old Florida design. It's in Dubois Park, worth a visit for its lovely beaches and swimming lagoons. Docents lead tours Tuesday and Thursday, 10–1. The park is open dawn to dusk.

No Palm Beach mansion better represents the town's luminous legacy than the Spanish-style home built by Addison Mizner as his own residence in 1925. Mizner later sold El Solano to Harold Vanderbilt, and the property was long a favorite among socialites for parties and photo shoots. Vanderbilt held many a gala fundraiser here. Beatle John Lennon and his wife, Yoko Ono, bought it less than a year before Lennon's death. It's still privately owned and not open to the public, but it's well worth a drive-by on any self-guided Palm Beach mansion tour.