You are now facing the Pantheon, the largest and best-preserved building still standing from the days of ancient Rome.

In 1846 Robert Smirke was replaced as the Museum's architect by his brother Sydney Smirke, whose major addition was the Round Reading Room 1854 – 1857 ; at in diameter it was then the second widest dome in the world, the Pantheon in Rome being slightly wider.

Outer view of the Roman Empire | Roman Pantheon, Rome | Pantheon, still the largest unreinforced solid concrete dome.

Hadrian's Pantheon, Rome | Pantheon in Rome is an example of Roman concrete construction.

Many excellent examples of structures made from these concretes are still standing, notably the huge dome of the Pantheon in Rome and the massive Baths of Caracalla.

Mixtures of ground pozzolan and lime are the cements used by the Romans, and can be found in Roman structures still standing ( e. g. the Pantheon in Rome ).

The interior of the Pantheon ( Rome ) by Giovanni Paolo Pannini, ordered by and belonging to the art collection of Algarotti.

In Rome, he re-built the Pantheon and constructed the Temple of Venus and Roma.

In Rome, the Pantheon, originally built by Agrippa but destroyed by fire in 80, was rebuilt under Hadrian in the domed form it retains to this day.

Boniface obtained leave from the Byzantine Emperor Phocas to convert the Pantheon in Rome into a Christian church, and on 13 May 609 (?

In the effort to Christianize Rome, Zachary built the original church of Santa Maria sopra Minerva over an ancient temple to Minerva near the Pantheon.

* The Pantheon is constructed in ( Rome ) as it stands today by Hadrian.

* The Pantheon of Agrippa is reconstructed in Rome.

* Construction begins on the Pantheon in Rome.

* Pantheon, in Rome, is started to be built ( approximate date ).

* Pantheon, Rome is finished.

* The Pantheon in Rome is converted into a church.

Raphael and Maria Bibbiena's tomb in the Pantheon, Rome | Pantheon.

Life in ancient Rome revolved around the city of Rome, its famed seven hills, and its monumental structures such as the Flavian Amphitheatre ( now called the Colosseum ), the Forum of Trajan, and the Pantheon.

Formerly it was a temporary wooden building called Corinthian Bazaar, which featured an aviary and aimed to attract customers from the recently closed Pantheon Bazaar ( now Marks and Spencers ) on Oxford Street.

Among the churches of the Alfama are Lisbon Cathedral ( 12th-14th centuries ), the oldest of the city and located to the West of the neighbourhood, the Convent of the Grace ( Convento da Graça, 18th century ), near the Castle, the mannerist Monastery of São Vicente de Fora ( late 16th-18th century ), where the Kings of the House of Braganza are buried, and the baroque Church of Santa Engrácia ( 17th century ), now converted into a National Pantheon for important Portuguese personalities.

In 609, the Byzantine emperor Phocas gave the building to Pope Boniface IV, who converted it into a Christian church and consecrated it to Sancta Maria ad Martyres, now known as Santa Maria dei Martiri: " Another Pope, Boniface, asked the same Phocas, in Constantinople to order that in the old temple called the Pantheon, after the pagan filth was removed, a church should be made, to the holy virgin Mary and all the martyrs, so that the commemoration of the saints would take place henceforth where not gods but demons were formerly worshipped.

Remaining at Rome twelve days he pulled down everything that in ancient times had been made of metal for the ornament of the city, to such an extent that he even stripped off the roof of the church the blessed Mary, which at one time was called the Pantheon, and had been founded in honour of all the gods and was now by the consent of the former rulers the place of all the martyrs ; and he took away from there the bronze tiles and sent them with all the other ornaments to Constantinople.

* The Pantheon, Rome, Italy, originally built as a temple to the seven deities of the seven planets in the state religion of Ancient Rome ; now used as a basilica informally named Santa Maria della Rotonda

Similar to the Pantheon of Rome but reduced in scale, it is now preserved after the restoration erased the Baroque changes.

Bonnat's vivid portrait-painting of contemporary celebrities is his most characteristic work, but his most important works are arguably his powerful religious paintings, such as his Christ on the Cross ( now in the collection of the Musée du Petit Palais in Paris, but not currently on display ), Job ( in the Musée Bonnat ), St Vincent Taking the Place of Two Galley Slaves ( at the church of Saint-Nicholas des Champs in Paris ), and the large Martyrdom of St Denis for the Pantheon in Paris.

Two years after the premiere, Dauberval traveled to London to mount the work for the Ballet of the King's Pantheon Theatre, and for the occasion Dauberval changed the title of the ballet to La Fille mal gardée, as the ballet is now commonly known.

Marks and Spencer's " Oxford Street Pantheon " branch, at 173 Oxford Street now occupies the site.

The library got a new block, now known as the centenary exhibition hall of the museum after restoration, in the northwest corner of the Pantheon in 1876, with a lecture hall.

The Roman Catholic festival of All Saints is known to have been introduced in the early 7th century, on the occasion of the dedication of the Pantheon as a church, but on the continent, it was celebrated on 13 May throughout the 7th and 8th centuries.

It has been in continuous use throughout its history, and since the 7th century, the Pantheon has been used as a Roman Catholic church dedicated to " St. Mary and the Martyrs " but informally known as " Santa Maria della Rotonda.

* National Pantheon of Venezuela, a burial place and former church

* National Pantheon of the Dominican Republic, a former church and burial place

Phocas gave the Pantheon to Pope Boniface IV for use as a church and intervened to restore Smaragdus to the Exarchate of Ravenna.

This monumental church, modelled after the Pantheon in Rome, was designed by the Polish architect Adam Ballenstaedt.

Weinbrenner, who built this church between 1808 and 1814, orientated it to the Pantheon, Rome.

Parts of the design originate in the Pantheon of ancient Rome and Jones evidently intended the church to evoke the Roman temple.

Painting by Giovanni Paolo Pannini of the Pantheon in Rome, Italy, after its conversion to a church.

The Pantheon is still used as a church.

Fragments of the obelisks, some quite large, have been found around the current church of Santa Maria sopra Minerva ; some archaeologists have proposed that the obelisk facing the Pantheon ( see picture ) may have been repositioned from the temple to its current location.

The church is located in the Piazza della Minerva one block behind the Pantheon in the Pigna rione of Rome, Italy within the ancient district known as the Campus Martius.

On the following 20 October, he was assigned the titular church of Sant ' Agata dei Goti ( later transferred to that of the Basilica of Santa Maria ad Martyres Lady of the Martyrs, better known as the Pantheon, on 28 July 1817 ).

The Mother Church of the Pantheon of Man once held all the gods in equal worship, until a schism occurred which drove followers of Neroth, Sarish and Nier to form an independent church, the Dark Triumvirate in Canceri.

Because the first two kings of Portugal are buried in the church it was granted the status of National Pantheon.

The most notable features of the interior of the church are the choir and the royal Pantheon of the kings of Navarre and later Castile and Leon.