Lisbon has been transformed over the past 20 years into Europe's most cosmopolitan city.
The oldest city in France is a city of contradictions.
Moscow is located between five rivers and seven seas and is known as the global capital of the outrageous.
Hot water geysers dominate Reykjavik's landscape.
Venice, known for gondolas, sunsets and light, remains the most medieval city still standing.
Photographer Heidi Hollinger explores the essence of Vancouver, discovering its spirit and soul.
The capital of Malta was designed to provide natural air conditioning; closed balconies.
The vibrant city of Hong Kong.
Copenhagen ranks among the leaders in generating clean energy and sustainable development; bicycles are the transportation choice.
Stockholm's many bridges allow quick, environmentally sound travel by bicycle.