Opened in 1973 as the first bridge to span the Bosphorus, the 15 July Martyrs Bridge connects the European and Asian shores of Istanbul and stands as a symbol of the city that famously straddles two continents. Stretching more than a kilometre between Ortakoy on the European side and Beylerbeyi on the Asian, the elegant suspension bridge was designed by British engineers and built in just over three years, its completion timed to the fiftieth anniversary of the founding of the Turkish Republic. .....

Perched on the 94th floor of the tower at 875 North Michigan Avenue, the observation deck branded today as 360 CHICAGO ranks among the highest public viewpoints in the city. The skyscraper opened in 1969 as the John Hancock Center, and an observatory has occupied its upper floors almost from the beginning, carrying sightseers roughly 1,000 feet skyward in about 39 seconds aboard some of the fastest elevators in the country. A multi-million-dollar renovation in 2014 retired the old name, introduc.....

Devoted to the playful art of the optical illusion, the 3D TrickArt Museum in central Berlin invites visitors to become part of the artwork, posing within elaborately painted scenes that appear startlingly three-dimensional when viewed and photographed from the right angle. The museum belongs to a genre of attraction that has grown popular in cities around the world, in which large murals and installations are created using the techniques of forced perspective and trompe-l'oeil so that a flat p.....

Few streets carry the symbolic weight that Fifth Avenue does in New York. Laid out as the Manhattan grid took shape in the early 1800s and generally dated to 1824, when its lower section reached Washington Square, the avenue first filled with the mansions of Gilded Age families before commerce gradually pushed the wealthy further uptown. What remained was a corridor that doubles as a roll-call of the city's landmarks and a global byword for luxury retail. Walking north, the route passes the Fla.....

Twelve colossal marble apostles line the nave of Copenhagen's cathedral, leading the eye toward Bertel Thorvaldsen's serene Christ figure above the altar - a sculptural programme so dominant that the building is sometimes described as more Thorvaldsen's church than the architect's. The site on Norregade has carried a church since the late 1100s, when Bishop Absalon's successors raised a chalk-stone Church of Our Lady that was completed around 1209. Fire and war treated its successors brutally: t.....

Tucked into the bustle of San Francisco's Pier 39 waterfront, the 7D Experience is a compact, high-energy interactive ride that fuses the screen-based action of a video game with the physical motion of a theme-park attraction. Part of a small American chain of such rides, the venue opened on the pier in the mid-2010s and quickly became a favourite quick stop for families and groups looking for a punchy diversion between the sea-lion docks, restaurants and shopping along the bay. The format is s.....

Instantly recognisable for the giant X-shaped braces running up its sides, the 100-storey tower at 875 North Michigan Avenue has anchored the Chicago skyline since 1969. It was conceived as the John Hancock Center, financed by the insurance company whose name it carried for half a century, and designed by architect Bruce Graham with structural engineer Fazlur Rahman Khan of Skidmore, Owings and Merrill. Their exterior braced-tube system let the building rise without a forest of interior columns .....

Set on the second floor of a building at 420 West 14th Street in the Meatpacking District, the 9/11 Museum Workshop is a deliberately small and personal counterpoint to the larger memorial downtown. It was founded by Gary Marlon Suson, who served as the official photographer for the Fire Department of New York during the nine-month recovery effort at Ground Zero, and it opened to the public in September 2005. Rather than recounting the attacks themselves, the exhibit concentrates on the months o.....

At 93 metres from west door to apse, Aarhus Cathedral is the longest church in Denmark, and its 96-metre tower makes it the tallest as well. Officially the church of St Clemens - patron saint of sailors, a fitting dedication for a building that originally stood almost on the beach of Aarhus Bay - it dominates Store Torv in the heart of the old town and serves as the mother church of the Diocese of Aarhus. Construction began in the 1190s under Bishop Peder Vognsen of the powerful Hvide family, o.....

Hands-on and unashamedly fun, ABBA The Museum on the Stockholm island of Djurgarden tells the story of the Swedish quartet whose music became a global phenomenon after their 1974 Eurovision win, and has drawn crowds of fans and curious visitors since it opened in 2013. The museum was built around the idea that visitors should take part rather than merely look, so alongside the cases of original costumes, gold records and instruments there are interactive stations where guests can sing with the .....