In 1852 he became pastor of the small Baptist church at Waterbeach, Cambridgeshire, and in 1854, after preaching three months on probation and just four years after his conversion, Spurgeon, then only 20, was called to the pastorate of London's famed New Park Street Chapel, Southwark (formerly pastored by the Particular Baptist theologian John Gill). Within a few months of his call his powers as a preacher made him famous.
Spurgeon in his late twenties.The congregation quickly outgrew their building, moved to Exeter Hall, then to Surrey Music Hall. In these venues Spurgeon frequently preached to audiences numbering more than 10,000 — all in the days before electronic amplification. At twenty-two Spurgeon was the most popular preacher of the day.
In 1861 the congregation moved permanently to the newly constructed purpose-built Metropolitan Tabernacle at Elephant and Castle, seating five thousand people with standing room for another thousand. Some say that the Metropolitan Tabernacle is considered the first modern "megachurch."
Spurgeon was a Baptist and a Calvinist, but is still known to non-conformists of many denominations as the "Prince of Preachers" in the tradition of the Puritans and especially highly regarded amongst Presbyterians and Congregationalists, although he differed with them over the issue of baptism (in 1862, Spurgeon alienated many evangelicals when he preached against infant baptism, even though he was a staunch Calvinist).