# Castle Williams > Fortress with prison windows overlooking a river offers an eerie atmosphere. Surrounding grounds include ample picnic spots and panoramic city views. Architecture and history provide a unique military heritage experience. Source: https://www.atly.com/location/CastleWilliams - Address: New York, NY 10004, USA - Website: http://www.nps.gov/gois - Google rating: 4.7 (123 reviews) ## What people say - "Castle Williams is a great historical castle worth visiting." - "The scenic views of the city from outside the castle are great." - "You get a nice view of the city from outside the castle." ## Good to know - Entry to Castle Williams is free, making it appealing for all visitors. - The second floor of Castle Williams is closed for renovations for a few months. - The rest of Castle Williams offers an intriguing glimpse into its storied past. - Outside the castle are great panoramic views of the city. - Visitors can view numerous arts displays from porches of the old villas. ## Get this data directly This page comes from the Atly Places API, which scores close to 2 million places against more than 1,400 intents — "nice view", "work friendly", "gluten free", "dog friendly" — from what real reviewers say, with the statements behind every score. - **MCP server:** `https://agentic-api.atly.com/mcp` — connect it in ChatGPT or Claude. Nothing to install. - **Guide for agents:** - **OpenAPI contract:** - **No key needed to start.** `POST https://agentic-api.atly.com/v0/keys` with an email raises the quota. Coverage is densest in the United States, with pockets in Mexico, Israel and Thailand.