History:
After centuries of the rule of the Western Gangas, Bangalore was captured by the Cholas in 1024 CE which later passed on to the Chalukya-cholas in 1070. In 1116 the Hoysala Empire, overthrew the Cholas and extended its rule over Bangalore. Modern Bangalore was founded by a vassal of the Vijayanagara Empire, Kempe Gowda I, who built a mud-brick fort and a Nandi Temple in the proximity of modern Bangalore in 1537. Yelahanka is one of the oldest towns in Karnataka and it is believed that it has a history of more than 500 years. It is the home town for the ruling king called Kempegowda (under a provision given by Krishnadevaraya) who built Bangalore City. Kempe Gowda referred to the new town as his "gandubhūmi" or "Land of Heroes".
Within Bangalore Fort, the town was divided into smaller divisions – each called a "pete" (IPA: [peːteː]). The town had two main streets – Chikkapete Street, which ran east-west, and Doddapete Street, which ran north-south. Their intersection formed the Doddapete Square — the heart of Bangalore. Kempe Gowda's successor, Kempe Gowda II, built four famous towers that marked Bangalore's boundary. Myth says that the city would befall great calamity if it extended beyond these four towers.During the Vijayanagara rule, Bangalore was also referred to as "Devarāyanagara" and "Kalyānapura" ("Auspicious City").
After the fall of the Vijayanagara Empire, Bangalore's rule changed hands several times. In 1638, a large Bijapur army led by Ranadulla Khan and accompanied by Shahji Bhonsle defeated Kempe Gowda III and Bangalore was given to Shahaji as a jagir. In 1687, the Mughal general Kasim Khan defeated Ekoji I/Venkoji, son of Shahaji, and then sold Bangalore to Chikkadevaraja Wodeyar (1673–1704) of Mysore for 300,000 rupees.After the death of Krishnaraja Wodeyar II in 1759, Hyder Ali, Commander-in-Chief of the Mysore Army, proclaimed himself the de facto ruler of Mysore. The kingdom later passed to Hyder Ali's son Tippu Sultan, known as the Tiger of Mysore. Bangalore was eventually incorporated into the British Indian Empire after Tippu Sultan was defeated and killed in the Fourth Anglo-Mysore War (1799). The British returned administrative control of the Bangalore "pētē" to the Maharaja of Mysore, choosing only to retain the Cantonment under their jurisdiction. The 'Residency' of Mysore State was first established at Mysore in 1799 and later shifted to Bangalore in the year 1804. It was abolished in the year 1843 only to be revived in 1881 at Bangalore and to be closed down permanently in 1947, with Indian independence. The British, found it easier to recruit employees in the Madras Presidency and relocate them to cantonment area during this period. The Kingdom of Mysore relocated its capital from Mysore city to Bangalore in 1831. Two important developments during this period contributed to the rapid growth of the city: the introduction of telegraph connections and a rail connection to Madras in 1864.

Geography:
Bangalore lies in the southeast of the South Indian state of Karnataka. It is in the heart of the Mysore Plateau (a region of the larger Precambrian Deccan Plateau) at an average elevation of 920 m (3,018 ft). It is positioned at 12°58′N 77°34′E / 12.97°N 77.56°E and covers an area of 741 km² (286 mi²). The majority of the city of Bangalore lies in the Bangalore Urban district of Karnataka and the surrounding rural areas are a part of the Bangalore Rural district. The region consisting the Bangalore Urban and Rural districts is known as the Bangalore (region). The Government of Karnataka has carved out the new district of Ramanagara from the old Bangalore Rural district.
The topology of Bangalore is flat except for a central ridge running NNE-SSW. The highest point is Doddabettahalli, which is 962 m (3,156 ft) and lies on this ridge. No major rivers run through the city, though the Arkavathi and South Pennar cross paths at the Nandi Hills, 60 km (37 mi.) to the north. River Vrishabhavathi, a minor tributary of the Arkavathi, arises within the city at Basavanagudi and flows through the city. The rivers Arkavathi and Vrishabhavathi together carry much of Bangalore's sewage. A sewerage system, constructed in 1922, covers 215 km² (133 mi²) of the city and connects with five sewage treatment centers located in the periphery of Bangalore.
In the 16th century, Kempe Gowda I constructed many lakes to meet the town's water requirements. The Kempambudhi Kere, since overrun by modern development, was prominent among those lakes. In the earlier half of 20th century, the Nandi Hills waterworks was commissioned by Sir Mirza Ismail (Diwan of Mysore, 1926–41 CE) to provide a water supply to the city. Currently, the river Kaveri provides around 80% of the total water supply to the city with the remaining 20% being obtained from the Thippagondanahalli and Hesaraghatta reservoirs of the Arkavathi river.Bangalore receives 800 million litres (211 million US gallons) of water a day, more than any other Indian city.However, Bangalore sometimes does face water shortages, especially during the summer season- more so in the years of low rainfall. A random sampling study of the Air Quality Index (AQI) of twenty stations within the city indicated scores that ranged from 76 to 314, suggesting heavy to severe air pollution around areas of traffic concentration.
Bangalore has a handful of freshwater lakes and water tanks, the largest of which are Madivala tank, Hebbal lake, Ulsoor lake and Sankey Tank. Groundwater occurs in silty to sandy layers of the alluvial sediments. The Peninsular Gneissic Complex (PGC) is the most dominant rock unit in the area and includes granites, gneisses and migmatites, while the soils of Bangalore consist of red laterite and red, fine to soils.
Vegetation in the city is primarily in the form of large deciduous canopy and minority coconut trees. Though Bangalore has been classified as a part of the seismic zone II (a stable zone), it has experienced quakes of magnitude as high as 4.5.