About 200 kilometers (120 miles) southeast of the mainland is the Greek island of Santorini, which is located in the southern Aegean Sea. The Santorini caldera created a small, circular archipelago of islands, of which this is the largest. It is the southernmost island in the Cyclades group, with an area of around 73 km2 (28 sq mi), and has 15,480 residents according to the 2021 census. The populated islands of Santorini and Therasia, as well as the uninhabited islands of Nea Kameni, Palaia Kameni, Aspronisi, Anydros, and Christiana, are all part of the municipality of Santorini. The entire land area is 35 square miles, or 91 km².Thira is the regional unit that includes Santorini. In the South Aegean Volcanic Arc, it is the most active volcanic center. The volcanic arc is roughly 20 to 40 km (12 to 25 mi) wide and 500 km (300 mi) long. Though volcanism on Thera started about 2 million years ago with the eruption of dacitic lavas from vents around Akrotiri, the region first experienced volcanic activity 3–4 million years ago. About 3,600 years ago, the island experienced one of the biggest volcanic eruptions in recorded history, leaving behind thick layers of volcanic ash and a sizable caldera filled with water. Like other Cyclades, Santorini's traditional architecture consists of low-lying cubical homes made of native stone that have been limewashed or whitewashed with different volcanic ashes to provide color. According to the island's traditional architecture, which was established up until the catastrophic earthquake of 1956, these colors have a tendency to replace white in the color of home façades in recent years. The distinctive feature is the widespread application of the hypóskapha, which are sideways or downward excavations of homes into the surrounding pumice. The Thira Autonomous Power Station, situated near Monolithos in the eastern region of Santorini, is the primary source of electricity for both Santorini and Therasia. It is owned by the Public Power Corporation (PPC) and features gas turbines and diesel engines for its generators. The combined installed capacity of the two islands is 0.25 MW of renewable energy and 75.09 MW of thermal energy. The Cyclades Interconnection Project is a €124 million initiative that aims to link the island to Naxos by an underwater cable and, eventually, to the mainland grid by 2023.The island's capital, Fira, is home to the main bus station, from which busses regularly depart. They cover the routes to the majority of tourist destinations and nearly every location on the island.

Johannesburg is a city in South Africa's Gauteng province. It is the main financial and industrial center of the nation. Johannesburg, one of the newest big cities in the world, was established in 1886 after gold was discovered. Prior to becoming one of South Africa's four provinces, the city was a part of the Transvaal, an independent Afrikaner, or Boer, republic. Today, the city is a part of one of South Africa's nine provinces, Gauteng, which means "Place of Gold" in Sotho. The Highveld, a wide, grassy plateau that stretches across the interior of South Africa, is where Johannesburg is located. The city is situated on the edge of the Witwatersrand, also known as the Rand, which is a chain of low, rocky ridges that serves as a watershed between the drainages into the Atlantic and Indian seas. The city is between 5,700 and 5,930 feet (1,740 and 1,810 meters) above sea level. The climate of Johannesburg is moderate. The average temperature is around 75 °F (24 °C) in the summer and 55 °F (13 °C) in the winter, with very few periods below freezing. In both winter and summer, the city receives roughly eight hours of sunlight each day. Although the overall amount of rainfall fluctuates greatly from year to year, it averages around 28 inches (700 millimeters) annually. A major location for several creative and cultural industries, Johannesburg is a cultural center in South Africa with a diverse range of cultural venues. In addition to a plethora of other museums, theaters, galleries, and libraries, Johannesburg is home to the South African Ballet Theatre, the National School of Arts, and the University of Witwatersrand's School of the Arts.The Central Business District of Johannesburg is home to the Johannesburg City Library. The city is home to a number of Premiership and National First Division football teams. The top Johannesburg teams in the Premiership, such as Orlando Pirates (also known as the Buccaneers) and Kaizer Chiefs (also known as Amakhosi), are bitter rivals. They are headquartered at the Orlando and FNB stadiums in the city. Soccer City, the site of the 2010 FIFA World Cup final, hosts a number of major league and cup matches. FC AK and Jomo Cosmos are the teams in the First Division. The stadiums used by Katlehong City and Alexandra United are Alexandra and Reiger Park, respectively.