CT scan showing radiofrequency ablation of a liver lesion. RFA may be performed to treat tumors in the lung, liver, kidney, and bone, as well as other body organs less commonly. Once the diagnosis of tumor is confirmed, a needle-like RFA probe is placed inside the tumor.
After the completion of the iron staircase in the monument's interior, the Washington Monument was first accessible to the public in 1886, closed much of 1887 until it could be better protected from vandals, and reopened in 1888 with a public elevator.
The Washington Square Arch has been a staple of the park since 1889. Designed by Stanford White the arch was first built out of wood and plaster to commemorate the 100th anniversary of George Washingtonâs inauguration. The prominent citizens loved it and paid for White to design it out of marble.