# YMCA Boston > Facility offers gym, pool, and sauna with new exercise equipment and small class sizes. Atmosphere stays casual and open, welcoming a diverse community without feeling crowded. Skilled instructors lead classes that suit all ages, including children's swim lessons known for quality teaching. Source: https://www.atly.com/location/YMCABoston - Address: 150 3rd Ave, Charlestown, Massachusetts, United States - Phone: +16172861220 - Website: http://ymcaboston.org/ ## What it is good for - Kid Friendly — 10/10 - Weight Lifting Gym — 8/10 - Gyms — 7.5/10 ## What people say - "The gym here has new equipment and great classes." - "The weight lifting gym has good equipment and machines." - "The kid-friendly swim classes are fun and progress is amazing." ## Good to know - Parking is easy to find, sometimes free on the inner roads or for a small fee on the main roads. - The gym is generally never too crowded to use a machine. - The small class sizes and skilled teachers contribute to effective learning. - Some of the better teachers tend to get booked out faster. - The exercise equipment was recently replaced. ## 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.