Former Site of
Heidenheimer's Castle

G
A
L
V
E
S
T
O
N

C
O
U
N
T
​Y

Marker Text: In 1857 John S. Sydnor (1812-1869), former Galveston mayor, built the original two-story, eight-room structure at this site. Samson Heidenheimer (1834-1891) bought it in 1884. The German-born Heidenheimer began with a $100 loan and built a fortune as a Confederate blockade runner. He was associated with Sydnor and his son Seabrook in an auction business. Heidenheimer enlarged the house to four stories and 37 rooms and added castle-like tower and turrets. It changed owners many times after his death, burned in 1973, and was razed in 1975. (1978) 

Marker No: 7484

Aluminum 18 x 28 Subject Marker 

Geographic: ​29° 18.194′ N, 94° 47.071′ W

Location: ​1602 Sealy Avenue, Galveston