Friends race through the city of Istanbul.
Friends face eight challenges in Budapest, including finding the Turul Statue of the eagle on Castle Hill.
Friends discover some of Glasgow's hidden surprises.
Charles Bridge, the Astronomical Clock, the Museum of Communism, Petrin Hill, Prague Castle and the grave of Franz Kafka.
A couple battles crowds, heat and humidity while racing around Tokyo.
The weather becomes an obstacle for the contestants.
An Australian couple jets off to the port city of Lisbon.
From the Puerto del Sol to the Atocha Train Station, two buddies discover Madrid.
Exploring Amsterdam, from the floating flower market on the Singel Canal to the Rijksmuseum.
Contestants tackle the city of Singapore for a chance to stay at the world-famous Raffles Hotel.
Londoners use a series of cryptic clues to guide them through the streets of Shanghai.
Participants find challenges at a Book Sellers minaret, an animal tannery, Jardin Majorelle and Jemaa El Fna.
Nick Pettett and Alex Paiva jet off to Kuala Lumpur with hope of winning a luxurious beach vacation.
Exploring La Boca Stadium, the Casa Rosada and Evita's tomb in Buenos Aires.
Exploring Dublin, including the black and white stout brewed at the Guinness Brewery and Irish set dancing.
Two Brazilian friends test out the challenges of skiing.
Sites in Vancouver include the snowy summit of Grouse Mountain, totem poles in Stanley Park and the suspension bridge above the Capilano River.
Exploring Sydney, Australia, including the Bondi Surf Bathers' Life Saving Club and Sydney Harbour Bridge.
Tai chi in the open air; egg feast; Taoist temple; visiting the races.
A Hindu wedding; a Bollywood film set; laughter club; the Thieves Bazaar.
Table Mountain; penguins at Boulders Beach; fish and flower markets; Robben Island; Chapman's Peak.
Oldest cigar factory in Cuba; Castro's famous cape; bici-taxi; Plaza de la Catedral.
Basilica de Guadelupe; Plaza Garibaldi; art of Frida Kahlo; dining on grasshoppers; wrestlers of the Lucha Libre.
Searching for the famous golden fire hydrant; fortune cookie bakery; Lyle Tutton Tattoo Museum; Alcatraz; Golden Gate Park.
Outdoor cooking; shoe making for the stars.
A couple searches out a 4000-year-old skeleton; the fountain of Trevi.