All over the world there are sights that are worth visiting once in a lifetime. But which are the most spectacular in the world? TripAdvisor has announced the winners of its Travelers' Choice awards for places of interest. Award winners were determined using an algorithm that took into account the quantity and quality of ratings for landmarks worldwide, collected over a 12-month period. This year's awards recognized 759 landmarks in 68 countries and eight regions around the world. Below the top 10.
1. Angkor Wat – Siem Reap, Cambodia
2. Plaza de Espana – Seville, Spain
3. Sheikh Zayed Grand Mosque Center – Abu Dhabi, United Arab Emirates
4. St. Peter's Basilica – Vatican City, Italy
5. Mezquita Cathedral de Cordoba – Cordoba, Spain
6. Taj Mahal – Agra, India
7. Duomo di Milano – Milan, Italy
8. Alcatraz Island – San Francisco, California
9. Golden Gate Bridge – San Francisco, California
10. Parliament – Budapest, Hungary
