From Wikipedia:

The Spinnaker Tower is a 170-metre (560 ft) landmark observation tower in Portsmouth, England. It is the centrepiece of the redevelopment of Portsmouth Harbour, which was supported by a National Lottery grant. The tower’s design was chosen by Portsmouth residents from a selection of three different designs in a 1998 public poll. It has three viewing platforms one on top of the other at heights of 100 m, 105 m and 110 m.

The tower was designed by local firm HGP Architects and engineering consultants Scott Wilson and built by Mowlem with steelwork by Butterley Engineering. The Spinnaker Tower reflects Portsmouth’s maritime history through its design and is named after a spinnaker, a type of sail that balloons outward. The tower was opened on 18 October 2005.

The tower is owned by Portsmouth City Council and is operationally managed by Continuum Leading Attractions, a cultural attractions group based in York. Continuum also runs five other visitor attractions across the country.

The Spinnaker Tower was repainted and rebranded as the “Emirates Spinnaker Tower” from July 2015 following a five-year commercial sponsorship deal with the Dubai-based Emirates airline. The Emirates sponsorship deal expired in 2020 and the tower reverted to its original all-white paint scheme and name in April 2021. On 5 May 2023, it was announced that Macmillan Cancer Support would become the tower’s new sponsor beginning in June.

Image details
Date: 5 June 2021
Camera body: Nikon D50
Lens: Nikkor AF-S DX 18-55mm ƒ3.5-5.6G ED
Focal Length: 30mm
Aperture: ƒ/5.6
Shutter Speed: 1/1,250s
ISO: 200
Licensing: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

Image Details
Date: 3 October 2018
Camera body: Nikon D50
Lens: Tamron 70.0-300.0 mm f/4.0-5.6
Focal Length: 70mm
Aperture: ƒ/5
Shutter Speed: 1/1,250s
ISO: 200
Licence: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

Image Details
Date: 3 October 2018
Camera body: Nikon D50
Lens: Tamron 70.0-300.0 mm f/4.0-5.6
Focal Length: 70mm
Aperture: ƒ/5
Shutter Speed: 1/1,250s
ISO: 200
Licence: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

Image Details
Date: 3 October 2018
Camera body: Nikon D50
Lens: Nikkor AF-S DX 18-55mm ƒ3.5-5.6G ED
Focal Length: 48mm
Aperture: ƒ/5.6
Shutter Speed: 1/1,250s
ISO: 200
Licence: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

Image Details
Date: 3 October 2018
Camera body: Nikon D50
Lens: Nikkor AF-S DX 18-55mm ƒ3.5-5.6G ED
Focal Length: 18mm
Aperture: ƒ/5
Shutter Speed: 1/1,250s
ISO: 200
Licence: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

The Leaning Tower of Pisa (Italian: Torre pendente di Pisa) or simply the Tower of Pisa (Torre di Pisa [ˈtorre di ˈpiːza]) is the campanile, or freestanding bell tower, of the cathedral of the Italian city of Pisa, known worldwide for its unintended tilt. The tower is situated behind the Pisa Cathedral and is the third oldest structure in the city’s Cathedral Square (Piazza del Duomo), after the cathedral and the Pisa Baptistry.

The tower’s tilt began during construction in the 12th century, caused by an inadequate foundation on ground too soft on one side to properly support the structure’s weight. The tilt increased in the decades before the structure was completed in the 14th century. It gradually increased until the structure was stabilized (and the tilt partially corrected) by efforts in the late 20th and early 21st centuries.

The height of the tower is 55.86 metres (183.27 feet) from the ground on the low side and 56.67 metres (185.93 feet) on the high side. The width of the walls at the base is 2.44 m (8 ft 0.06 in). Its weight is estimated at 14,500 metric tons(16,000 short tons). The tower has 296 or 294 steps; the seventh floor has two fewer steps on the north-facing staircase. Prior to restoration work performed between 1990 and 2001, the tower leaned at an angle of 5.5 degrees, but the tower now leans at about 3.99 degrees. This means the top of the tower is displaced horizontally 3.9 metres (12 ft 10 in) from the centre.

Image Details
Date: 11 May 2018
Camera body: Nikon D50
Lens: Tamron 70.0-300.0 mm f/4.0-5.6
Focal Length: 70mm
Aperture: ƒ/5.6
Shutter Speed: 1/1,250s
ISO: 200
Licence: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International