Aravankadu railway station

India's first smokeless propellant factory, opened on 19 January 1904 and still an ordnance factory today, three and a half kilometres up the valley from Wellington station. Captain Babington was sent to find a site in 1898 and chose about 350 acres here for a reason that is pure Nilgiris — cordite has to be made in a cool climate, because nitroglycerine freezes at forty degrees Fahrenheit — and the Kateri hydroelectric dams of 1902 and 1916 were built to power it. It is a prohibited place within the meaning of the Official Secrets Act: you see the township, the school and the gate from the road, and you photograph none of it.

The barracks quarter on the far side of the stream from the market, begun in 1852 and finished in 1860, called Wellington Barracks for a century and renamed Srinagesh Barracks after General S. M. Srinagesh, the first Indian Colonel of the Madras Regiment. The Cantonment Board still governs the whole 1,647-acre town from here under the Ministry of Defence, which is why Wellington has a board and seven wards rather than a municipality and a mayor.

The bridge that separates the barracks from the bazaar, first thrown across the Mynala stream in 1878 as the Waterloo Bridge and known for a century as the Black Bridge because it was built of Burmese teak and painted black. It was rebuilt in March 2009 — forty-three and a half metres of it — and renamed for Field Marshal Sam Manekshaw, who died at the Military Hospital here on 27 June 2008.

The cantonment's own halt on the Nilgiri Mountain Railway, and the point every distance on the Wellington page is measured from, because the town has no bus stand at all. It sits above the rack: the toothed third rail that hauls the train up the gorge ends at Coonoor, so everything through this single platform runs on plain track, and the station opened in 1908 with the extension to Udhagamandalam rather than with the line itself in 1899 — the barracks below it were forty-eight years old before the train arrived.

The memorial of the Madras Regiment, the oldest infantry regiment of the Indian Army, raised in 1758 and at Wellington since February 1947. The Cantonment Board's own history places the Defence Services Staff College directly in front of it, which makes this small square the centre of military Wellington rather than the barracks themselves; the ground around it is cantonment land, and what you may photograph is decided at the gate, not by the memorial.

An Anglican church in Coonoor, now of the Church of South India, on the Kattabettu road out of the town — stained glass, antique woodwork and an old pipe organ in a Gothic hall. Its founding is published as both 1851 and 1854 and we have found no official source that settles it, so both are printed. We have no checked coordinate for it, so no distance to it is printed.

Lady Canning's Seat is an elevated colonial-era vantage point near Coonoor named after the wife of Lord Canning, Viceroy of India. It is prized for its sunrise and sunset views over the surrounding valleys and tea slopes.

A garrison club that dates itself from the brick cricket pavilion put up for the troops in 1873, though it only took the name Wellington Gymkhana in 1916, and it now runs an eighteen-hole hill golf course at about six thousand feet. Its own history records a race course here before Ooty's longer track was built, nine-hole golf, polo and rugby by the 1930s, its first Indian member in 1943, and the fact that the whole club stands on military land and pays a yearly rent to the Defence Department.

The hinge of the Nilgiri Mountain Railway, 370 m from the Coonoor bus stand. The Abt rack section that carries the train up the gorge from Kallar ends at this platform and the run on to Udhagamandalam above it is worked on plain track, which is why the locomotive shed is here and why the Coonoor-Ooty shuttles exist. Southern Railway gives the whole line as 45.88 km of metre gauge, opened to Coonoor on 15 June 1899.

A UNESCO World Heritage metre-gauge rack railway connecting Mettupalayam to Ooty via Coonoor, opened in stages between 1899 and 1908.

A 12-hectare botanical park in Coonoor established in 1874, laid out in irregular Japanese style with a small lake and rare tree species.

A vaccine institute on sixteen acres above the town, founded after Lily Pakenham Walsh died of hydrophobia in 1902 without reaching treatment in time. One lakh rupees of Henry Phipps's gift to Lord Curzon paid for it, Coonoor was chosen for its cool and equitable climate, and it began work on 6 April 1907. It has made antirabies vaccine ever since and DPT vaccines since 1982. A manufacturer, not a clinic.