- date of construction: 1900-1904
- cost: 2.5 million dollars (1904)
- dimensions: 170 feet long by 160 feet wide
- architect: hewitt and hewitt of philadelphia
- materials: native reddish-gray granite quarried on nearby oak island, mortar and steel
- 150 men quarried stone from george boldt’s own oak island, to supply materials for construction of the castle
- woods: light oak, dark mahogany and walnut imported from europe
- marble: pinkish-white marble imported from italy
- roof tile: original tiles were cement. current ones are red clay
- 30,000 square feet of roof tile is required to cover the roof
- power: electricity was generated on the island in the adjascent power house
- hot and cold running water was supplied to the castle from the power house
- castle rises six stories, from the foundation level of the indoor swimming pool, to the highest tower room (the water tower)
- contains 127 rooms with 30 bathrooms, 16 fireplaces and 365 windows
- walls are 2-feet thick and completely fireproof
- door and window sills are constructed of red potsdam sandstone
- castle includes four small towers 40 feet high, two towers 60 feet high, and the larger (water) tower rises to 75 feet
- slabs of granite measuring 8 feet by 14 feet by 8 inches were cut and used in the construction of the castle. slabs 20 feet long were cut for steps
- dome: opalescent stained glass colored green, pink, and light blue. hangs 80-100 feet above the floor
- over 300 stonemasons, carpenters and artisans worked to construct boldt castle
- over $14 million dollars have been spent so far, in continuing restoration and rehabilitation efforts
- over 230,000 visitors tour boldt castle and heart island
during it’s six-month season
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