Top 5: Tall hotels with great bars

Ritz-Carlton, Hong Kong

The Ritz-Carlton in Hong Kong, with its incredible 490m (1,607ft) height, became the world's tallest hotel when it opened last month. Its Ozone bar on the highest floor (118th) - making it the highest bar in the world - is the perfect spot to take in the stunning views of Hong Kong Island and Victoria Harbour while sipping a cocktail or two. The sumptuous spa on the 116th floor is also a good place to admire the city skyline with its floor-to-ceiling windows.

Sofitel Melbourne

Standing at 185m (606ft), the Sofitel Melbourne affords picture-perfect panoramas of the Yarra River and the skyline of Australia's second largest city. For the best views and ultimate luxury, stay in the Club Sofitel suites, where guests can make use of the private 35th-floor lounge and lavish accommodation from the 48th to 50th floors. The No35 restaurant and Atrium bar, also on level 35, provide floor-to-ceiling views where guests can dine and sip cocktails at high altitude down under.

Radisson Royal Hotel, Moscow

The Radisson Royal Hotel in Moscow became the world's tallest hotel when it was completed in 1957, and its neo-classical style sets it apart from the glut of modern, glass, high-rise structures. Set on the banks of the Moskva River, the 198m-tall (650ft) hotel boasts stylish apartments on the upper levels, while the 34th-floor Troubadour Karaoke Bar, with its far-reaching views, provides the perfect place to unwind.

Burj Al Arab, Dubai

The sail-shaped Burj Al Arab in Dubai was the world's tallest hotel at 321m (1,053ft) in height (and also one of the most iconic) when it opened in 1999. For the ultimate in opulence, stay in the royal suite on the 25th floor or, if you have a greater head for heights, take a panoramic lift to the 27th level where the Al Muntaha restaurant and Skyview Bar provide sweeping views of the white-sand Jumeirah Beach 200m (656ft) below.

Detroit Marriott at The Renaissance Center

The Detroit Marriot at The Renaissance Center is the tallest hotel in North America at 222m (728ft) in height, and its mindboggling 1,246 rooms and 52 suites are spread across 72 floors. The highest level includes the Coach Insignia steakhouse restaurant, bar and observation deck, where amazing views of Canada and the Detroit skyline can be seen. Stay in the presidential suite for the ultimate comfort at altitude, with its sweeping 360º vistas from the 70th floor.