Gardens by the Bay Hotel, Singapore
Taking a break from cycling, Culross, Scotland
National Museum of Qatar
The Martian, Woking, England
Maraya - the world's largest mirror building in Saudi Arabia
HMS Victory, Portsmouth, UK
The National Museum of Qatar in Doha was inspired by the crystal formation known as a desert rose.
Harringworth Viaduct, UK with its 82 arches!
Santa Cruz de Tenerife
Sana'a, Yemen
Rooftops in Bratislava, Slovakia
Moldovita Monastery in Romania dates from 1592 and is adorned inside and out on every available surface.
Sultan Qaboos Mosque, Muscat, Oman
In total, including the men's and women's prayer halls, the inner courtyards, paved ground and passageways, 20,000 people can pray here at the same time. Only on certain auspicious days is the mosque full, however; normally only between 100 and 500 faithfuls actually do attend. More men come to pray than women, as this picture shows the scale of the vast, cavernous men's prayer hall.
70,000 tons of pure cotton was used for this carpet, and it took 600 women (in Iran) two years to weave the 1,700 million knots. There are 28 different colours in this single piece of woven floor covering which weighs 70 tons.
The prayer hall is adorned with a spectacular chandelier, some 14 metres tall and weighing 8.5 tons. Featuring 600,000 Swarovski crystal trimmings, 24-carat gold plated metalwork, this ceiling light has 1,122 halogen lamps operated through 36 switching circuits. The chandelier is truly of gigantic proportions with a diameter of 8 metres making it the size of an average 3 bedroom detached house but twice the height! For maintenance purposes there is a staircase inside the chandelier. Not surprisingly it is reputed to be the largest in the world.
Puthia Hindu temple complex in Bangladesh
Traditional Ancerstral 'Spirit House' in Timor Leste
Panna Meena ka Kund Stepwell, Jaipur, India
Stepwells are deep wells with steps added to make it easier to reach the water in the bottom. They are fairly common in the hot, dry state of Rajasthan and often architecturally grand, with designs dating back at least 600 years. This particular one is much younger, having been constructed in the 16th century at the peak of the stepwell construction era.
If you've seen The Best Exotic Marigold Hotel, you may recognize Panna Meena ka Kund from one the scenes in the movie where Dev Patel woos girlfriend Tena Desae.
Steps are arranged in a criss cross pattern on three of the eight-storey sides, and the guide told us that you cannot use the same stairs to climb up and down. Unsure of how that works in reality, David did climb down, but managed perfectly well to go back up again the same way he came.
Pyongyang, North Korea
Eiffel Tower, Paris, France
Doha Skyline
Bobo Dioulasso Grand Mosque, Burkina Faso
The Grand Mosque in Burkino Faso's second biggest city was built at the end of the 19th century in a traditional style known as butabu. The term butabu describes the process of moistening earth with water in preparation for building; a method used extensively in West Africa. This amazing structure was created from locally available materials: mud and wood.
The wooden sticks (known as torons) that protrude from the pilasters and minarets, are not merely for aesthetic effect and strengthening purposes: they are used as 'scaffolding' during repairs. Being made from mud, the annual rains cause considerable damage to the structure, so each year the walls are re-plastered with more mud to re-shape the mosque into its characteristic rounded soft form.
Bandar Seri Begawan, Brunei
View from the 94th floor of the SWCF Tower in Shanghai, China
Two boats sit at the entrance to the Caen Hill Locks.
This flight of 16 locks on the Kennet and Avon Canal is one of the most impressive anywhere on the UK's waterways, climbing a very steep hill near Devizes in Wiltshire.
Quite the engineering feat, a different approach had to be applied here; because of the steepness of the terrain there was not the space to use the normal arrangement of water pounds between the locks. Instead, each of the 16 locks has an unusually large side pond to store the water needed to operate.
The locks are well worth a visit and walking along the footpath is very much quicker than negotiating the locks in a canal barge, which takes several hours.
Umaid Bhawan Palace, located in Jodhpur in India, is one of the world's largest private residences with 347 rooms. It is the principal residence of the former Jodhpur royal family although part of the building is not operated by Taj Hotels and features a museum.
Traditional Tongkonan houses in Tanah Toraja, Sulawesi, Indonesia
Crescent Tower, Luseil, Qatar
Badjanani Mosque in Moroni, capital of the small island nation of Comoros
Singapore by night
Escalators at Budapest railway station, Hungary
Morwellham Quay, UK
Bristol Harbourside, UK
Galtaji Temple, Jaipur, India
Houses built downwards from the main road on the steep hillside of Banaue, Philippines
Asmaul Husna 99 Dome Mosque, Makassar, Sulawesi, Indonesia
Agua Ize abandoned hospital, São Tomé
Mosaic steps created by the Street Kids Project, Jacmel, Haiti - providing homeless children with an opportunity to earn money and learn a new skill, as well as housing and feeding them.
Petronas Twin Towers, Kuala Lumpur, Malaysia
Sultan Omar Ali Saifuddin Mosque, Brunei
