Speyer Cathedral, a basilica with four towers and two domes, was founded by Conrad II in 1030 and remodelled at the end of the 11th century. It is one of the most important Romanesque monuments from ...

His dome would consist of two concentric shells, an inner one visible from within the cathedral nested inside a wider, taller external dome. To counteract “hoop stress,” the outward ...

Speyer Cathedral, a basilica with four towers and two domes, was founded by Conrad II in 1030 and remodelled at the end of the 11th century. It is one of the most important Romanesque monuments from ...

The Gothic-period cathedral is a unique part of the city skyline, thanks to its two dome-topped towers. The dual towers stand at around 323 feet, though one is slightly higher than the other ...

Burgos Cathedral (named after the city where you can find it) is considered one of Spain's best and rivals ... including the construction of its two 275-foot-tall towers in the 15th century.