Highlight: The Sultan Suite -- at over US$15,000 a night, is one of the most expensive suites in the world.
Ciragan Palace Kempinski, Y?ld?z Mh., Ç?ra?an Cd, Be?ikta?, Turkey; +90 021 2258 3377
Tivoli Palacio de Seteais, Lisbon, Portugal
Built in the late 1700s exclusively for a powerful Dutch consul, before being sold to the Marquis of Marialva, Lisbon's Palace de Seteais is a grand escape located in the UNESCO World Heritage town of Sintra.
Considered a national monument, the entire first floor of the palace is open to the public, with reception halls, salons and other areas containing a number of frescoes and tapestries.
The second floor holds the 30 guest rooms, each retaining the palace's 18th-century style through antique furnishings and immense space.
Highlight: The Classic Suite is a huge room designed in a number of styles, including Louis XVI, Imperial and Neo-classical.
Tivoli Palacio de Seteals, Rua Barbosa Du Bocage 8, 2710-517 Sintra, Portugal; +351 21 923 3200
Four Seasons Hotel Lion Palace, St. Petersburg, Russia
A true sign of Russia's luxurious dreams, the Lion Palace is the Four Seasons' first hotel in Russia.
Originally built in the 19th century for the exquisitely named Princess Cleopatra Lobonova-Rostovskaya, it spent much of its life as upscale apartments for her royal friends and family, before falling into a state of disrepair in the 1900s.
Reopened just last month, the hotel has regained its palatial status, with its central location and majestic rooms transporting guests back to Tsarist Russia.
Highlight: The granite grand staircase, which leads to the Presidential Suite and has been recreated with the nearby Hermitage and Winter Palace in mind.
Four Seasons Hotel Lion Palace, Voznesensky Ave, 1, St. Petersburg, Russia, 190000; +7 812 339 8055
Xara Palace, Mdina, Malta
The Maltese city of Mdina is itself a historic wonder: a UNESCO World Heritage Site whose history was influenced by the Knights of St. John. Built by the Knights in the 17th century as a residence for the royal Moscati Parisio family, the Xara Palace was reopened in 1999 as an exclusive 17-room Relais & Chateaux hotel.
Rooms are simple yet refined, paying tribute to the order through numerous antique paintings.
Highlight: The award-winning de Mondion restaurant, offering traditional dishes with 180-degree views of the city.
Xara Palace, Misrah il-Kunsill, Mdina MDN 1050, Malta; +356 2145 0560