The best sightseeing tours in Bilbao offer a diverse array of experiences for visitors. 'Explore the Beauty of Bilbao by Foot' is highly recommended for a comprehensive overview of the city's landmarks. For those interested in architecture and history, 'Bilbao's Grandeur: A Historical & Architectural Walk' cannot be missed. Additionally, 'Uncover Bilbao's Secrets: A Historic Self-Guided Audio Tour' is an exceptional choice for delving into the rich tapestry of Bilbao's Old Quarter.

Outside the top sightseeing tours in Bilbao, the city offers many exciting activities. Visitors can experience the vibrant culinary scene at Michelin-starred restaurants or traditional pintxo bars. Bilbao is also home to world-class museums, such as the Fine Arts Museum, and bustling markets like the Mercado de la Ribera. Outdoor enthusiasts can enjoy the lush Etxebarria Park or take a riverside walk along the Ría de Bilbao.

The duration of sightseeing tours in Bilbao can vary. Shorter tours, such as 'Explore the Beauty of Bilbao by Foot', may last a few hours, offering a succinct yet enriching experience. More comprehensive tours, like 'Bilbao's Grandeur: A Historical & Architectural Walk', can span several hours to a full day, allowing for a deep dive into the city's architectural wonders and historical contexts. The length of the tour typically correlates with the depth and breadth of content covered.