Walk atop Rothenburg’s city walls or climb to the top of the town hall for great views. The Night Watchman tour is an unforgettable way to learn the city’s history. And our travelers also recommend the Medieval Crime Museum (Mittelalterliches Kriminalmuseum)—it’s gruesome but fascinating.

About 10 miles north of Nuremberg, Erlangen is the home of the University of Erlangen-Nuremberg (Friedrich-Alexander-University), founded in 1742. Just over 100,000 people live here, about a third of whom are involved with the university; about another third work for the Siemens corporation. Bergkirchweih, Erlangen’s annual festival - akin to Munich’s Oktoberfest - opens in a different beer cellar every year and is attended by over a million people in its twelve-day run around Pentecost.

With half a million people, Nuremberg is Bavaria's second largest city. While its history dates to the 11th century, Nuremberg is most often linked to the 20th century (specifically World War II). It first served as the site of many pre-war Nazi rallies, then was nearly levelled by Allied bombing, then was the site of the famous post-war Nuremberg Trials. The city has much to offer today's visitors, including the rebuilt Nuremberg Castle and the world-famous gingerbread at Hauptmarkt. Hansel and Gretel would have loved this place.

Many people travel through Frankfurt for business, as it's a major transportation hub and an industrial and financial metropolis. Of course we know that business travellers hate to have any fun on the road (wink), but it's worth lingering in Frankfurt if you can. The 2,000-year-old city has much to offer: skyscrapers, the Main River, a famous opera house, thriving theatre district, zoo, pedestrian shopping street, parks, scores of bars and dance clubs, and more than 50 museums.

Home to the oldest university in Germany, Heidelberg was hit hard during 17th-century wars and rebuilt in the 18th century with baroque buildings. For a pleasant walk, stroll through the historic city centre's Gothic streets. Be sure to take in Heidelberg Castle, the symbolic heart of the city; Alte Brucke, a beautiful 18th-century bridge; and the Student Jail. Built as long ago as the 16th century, it was used to keep mischievous students off the streets for three days to a month at a time. And they say Penn State is the number-one party school!

Just north of Frankfurt at the foot of the Taunus Mountains, Bad Homburg has been treasured for its healing baths since the 19th century, when it hosted royalty from across Europe and the world. Of course they also came for its casino, sometimes called "the mother of Monte Carlo." Today, both the original Spa Park (or Kurpark) and the Bad Homburg Casino are still here, and visitors also enjoy Bad Homburg Castle and its White Tower. Just northwest of town is Saalburg, a restored Roman fort.

Baden-Wurttemberg’s second-largest city after Stuttgart, Mannheim lies at the confluence of the Rhine and Neckar Rivers and is rare among German cities for its layout, a grid pattern (or “quadrates”) similar to those found in North America. The grid was originally plotted in 1606 and emanated from Friedrichsburg fortress, which later became the site of Mannheim Palace. Today, it partly houses the University of Mannheim. The city’s iconic water tower and its beautiful Luisenpark are must-sees.

Everyone who visits Paris for the first time probably has the same punchlist of major attractions to hit: The Louvre, Notre Dame, The Eiffel Tower, etc. Just make sure you leave some time to wander the city’s grand boulevards and eat in as many cafes, bistros and brasseries as possible. And don’t forget the shopping—whether your tastes run to Louis Vuitton or Les Puces (the flea market), you can find it here.

Over the centuries, many cultures have added their mark to this prized piece of land. Today, you can experience those influences firsthand by exploring Istanbul’s mahalles (neighbourhoods). From the holy sites of Sultanahmet and the 19th-century European elegance of Beyoğlu to the high fashion of Nişantaşı, the vibrant café society of Kadıköy and the football-loving streets of Beşiktaş, it’s easy to see why travellers say that Istanbul isn’t just one city, but many cities within one.

Laid out by British architect Edwin Lutyens, the Indian capital is a striking modern metropolis. A gracious contrast to Old Delhi's winding streets, the grand avenues and stately buildings of New Delhi are rich with history and culture, from Gandhi's Delhi home (and the site of his assassination) to the tomb of Humayun, a complex of Mughal buildings reminiscent of the Taj Mahal. Chaotic traffic is best left to the locals. Negotiate a good price for taxis or travel on the new Delhi Metro.

Founded in the 15th century, Ahmedabad is the largest city in the state of Gujrat. The city is a vibrant business district and rising centre of education, information technology and scientific industries. Divided in two - the old city and the new city; The city offers different moods right from the hustle-bustle of C.G. Road in the heart of Ahmedabad to the quite retreat of of the Sabarmati Ashram. Ahmedabad enjoys a thriving cultural tradition, being the centre of Gujarati cultural activities and diverse traditions of different ethnic and religious communities. Popular celebrations and observances include Uttarayan - an annual kite-flying day on 14 January and the nine nights of Navratri - celebrated with people performing Garba - the folk dance of Gujarat - at venues across the city.

Mumbai (formerly known as Bombay), India, is famous for its chaotic streets. For bargains and people-watching, outdoor bazaars top the list of attractions. Popular waterfront destinations are Marine Drive, where visitors go to watch the sun set over the Arabian Sea, and the carnival-like Juhu Beach. More sightseeing options are the Gandhi Museum, in the leader's former home, and the cave temples of Elephanta Island. For tranquillity, Mumbai has many religious sites, lakes and parks.

The north Indian city of Varanasi, or Benares, is regarded as sacred by Hindus, Buddhists and Jains. Situated in the fertile Ganga valley and on the banks of the Ganges, Varanasi is a place of pilgrimage for Hindus, who come to bathe in the holy river. Known as the City of Temples and a beacon of culture, Varanasi has produced many renowned writers. It’s also a centre of silk weaving, so practise haggling at the chaotic bazaar for some beautiful souvenirs. Rickshaws are the best way to get about.

Want a taste of being royal? Eat in Hyderabad, where culinary traditions have been passed down from the Nizam monarchy. Arabic, Turkish and Mughlai influences are easily recognisable. The city is famous for its rich, aromatic biryani made with lamb, chicken or vegetables and served with fragrant basmati rice. Satisfy your sweet tooth with double-ka-meetha, a bread pudding.

Known as both the "Garden City" and "The Silicon Valley of India," Bangalore (officially "Bengaluru") is a techie’s paradise, boasting the highest concentration of IT companies in the country. When you’re done geeking out, there are plenty of gardens, museums, natural features, palaces and temples to fill your dance card. Visit Vidhana Soudha, Cubbon Park and the Ulsoor Lake of Bangalore, well known for its beautiful locales and boating facilities. Bangalore is also a major centre of Indian classical music and dance, and of vivid, cutting-edge nightlife.